Construction Zone
Don\
Welcome! Log In Register

Advanced

Mk4 VW suspension thoughts

Posted by Grantmac 
danster
Haggis Muncher
Super Moderator
Location: Haggisland UK
Join Date: 01/04/2013
Age: Possibly Wise
Posts: 409

Rally Car:
VWs (for my sins)


Re: Mk4 VW suspension thoughts
December 17, 2013 06:32AM
Quote
Grantmac
I've measured everything from A3/TT/R32 down to piddly TDI stuff, all the same diameter. Different swaybar mounting is all.

Piddly TDI stuff! ha ha, that could be it, may be you only get the larger engined cars over there then, have you measured the smaller 1.4 and 1.6 petrol models, or the 1.9 SDI.
There is definitely more than one strut diameter so only pointed it out in case others are reading in.

What you gonna do at the rear with it's separate springs and shocks?

I can't believe nobody has suggested scrapping that old VW and just getting a new Fiesta....winking smiley



Disappointingly not yet a Jackass
Please Login or Register to post a reply
tdrrally
edward mucklow
Super Moderator
Location: charleston,wv
Join Date: 05/31/2011
Age: Possibly Wise
Posts: 763

Rally Car:
ford mustang LX 5.0, 1973 VW Beetle



Re: Mk4 VW suspension thoughts
December 17, 2013 09:13AM
I can't believe nobody has suggested scrapping that old VW and just getting a new Fiesta....winking smiley

what is like when money is not an issue?



I would rather drive a slow car fast as a fast car slow!
first rule of cars: get what makes you happy, your the one paying for it!
Please Login or Register to post a reply
john vanlandingham
John Vanlandingham
Elite Moderator
Location: Ford Asylum, Sleezattle, WA
Join Date: 12/20/2005
Age: Fossilized
Posts: 14,152

Rally Car:
Saab 96 V4



Re: Mk4 VW suspension thoughts
December 17, 2013 09:35AM
Quote
danster
Quote
Grantmac
I've measured everything from A3/TT/R32 down to piddly TDI stuff, all the same diameter. Different swaybar mounting is all.

Piddly TDI stuff! ha ha, that could be it, may be you only get the larger engined cars over there then, have you measured the smaller 1.4 and 1.6 petrol models, or the 1.9 SDI.
There is definitely more than one strut diameter so only pointed it out in case others are reading in.

What you gonna do at the rear with it's separate springs and shocks?

I can't believe nobody has suggested scrapping that old VW and just getting a new Fiesta....winking smiley

Danny me boyo dis is America, we only do the biggest motor. Only..whatever it is..
Remember: bigger is always better.

Andas for your cynical poking fun at my friend well here's the thing: dis galoot said he's just wanting blaze around on back roads up there in Canada where he lives---and its a veritable paradise for a gravel perv--

but he din't say he wanted to rally.
See?
Obviously to use the quote "nobody wants to see rusty ol beater Golves"
but this boy wants to just blaze around---so we don't need to explain why he should dump the car and buy a new Fiesta that has been smacked hard for 10 THOUSAND bucks---to impress others.

Got it?
Righty right then.



John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.
Please Login or Register to post a reply
danster
Haggis Muncher
Super Moderator
Location: Haggisland UK
Join Date: 01/04/2013
Age: Possibly Wise
Posts: 409

Rally Car:
VWs (for my sins)


Re: Mk4 VW suspension thoughts
December 17, 2013 10:15AM
Grant MacDonald sounds like a fine Scottish name so I am sure he will be robust enough to deal with the Fiesta gag. And he lives in British Columbia (is that the place where they produce all the cocaine but each line is served with a nice cup of tea and scone with clotted cream and jam.) eye rolling smiley

I see no mention of da US of A so considered they may have cars there with smaller engines to carbon offset their nations tar sands endeavours....

As this car is not going to be a full on rally car, I merely tried to point out that there may be OEM options that could be utilised to lift the car depending on what the vehicle spec is to start with. GTDIs can come with lower suspension and big wheels, So changing them out for smaller wheels with taller tyres, and bolting on some struts from a different model could have got him in the ballpark, and the cash saved could be put towards the steel sump that Josh wisely suggests.

Anyway all the recent Fiesta hype and chat seems to have stopped so that's old news, I am jumping back on the Escort mk2 bandwagon now as I assist my mate with his bitchin Kawasaki Green car. grinning smiley



Disappointingly not yet a Jackass



Edited 1 time(s). Last edit at 12/17/2013 10:16AM by danster.
Please Login or Register to post a reply
Josh Wimpey
Josh Wimpey
Senior Moderator
Location: VA
Join Date: 12/27/2006
Age: Midlife Crisis
Posts: 649

Rally Car:
Sneak the Golf


Re: Mk4 VW suspension thoughts
December 17, 2013 11:08AM
Quote
Grantmac
Josh:
That is great data! Are you talking the Bilstein PSS coil-over or just the HD is 36mm inverted? The inserts I'm talking about come complete with bushings since they are designed to replace the factory "wet" inserts on the Audi Quattro. I am confident in making many things but not in producing a brass bushing to those tolerances. Any reason you aren't still using those JVAB struts? What did you do for the rears?
Roger out on the oil pan. I will consider that the next item.

Yes, ALL Bilstein HD struts and Inserts are 'inverted'

For the rears, I copied JVABs but before JVAB started selling them :-)

I am still 'using' the JVABs. They are in the spare car and have served rally duty in other people's cars as well. Nothing wrong with them but I also have a set of RS&SPs that serve normal rally duty for the MK2 Golf.



____________________________________________________________-

One. Class -- 2WD

www.quantumrallysport.com

http://www.facebook.com/home.php?#/pages/Quantum-Rally-Sport/281129179600?ref=nf
Please Login or Register to post a reply
john vanlandingham
John Vanlandingham
Elite Moderator
Location: Ford Asylum, Sleezattle, WA
Join Date: 12/20/2005
Age: Fossilized
Posts: 14,152

Rally Car:
Saab 96 V4



Re: Mk4 VW suspension thoughts
December 17, 2013 11:47AM
Quote
danster


Anyway all the recent Fiesta hype and chat seems to have stopped so that's old news, I am jumping back on the Escort mk2 bandwagon now as I assist my mate with his bitchin Kawasaki Green car. grinning smiley

This post is useless wifout pitchers!



John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.
Please Login or Register to post a reply
Grantmac
Grant MacDonald
Junior Moderator
Location: Victoria, BC
Join Date: 12/15/2013
Age: Midlife Crisis
Posts: 18

Rally Car:
None


Re: Mk4 VW suspension thoughts
December 17, 2013 02:30PM
Danny:

Your solution would probably meet my needs very well except the stock Sachs struts are know to destroy themselves very quickly even under normal road conditions. If I stick with a stock-type strut then the only taller springs will be the VR6 units that I've already got and they are only 170#. I haven't installed them yet but it's the next thing I will do when I get a day to fiddle.

Josh:

Did you have to modify the rear top-mounts to convert the rear shocks into a coil-over design? Or am I totally off base? Out of curiosity how much static camber are you running on the front?

John:

As for plating and materials I wasn't going to use anything exotic (steel) and I intend on finishing with a firearms enamel based coating such as Duracoat. Maybe not optimum, but it should do the job.
I'm also going to look at the clearance between the strut and the driveshaft at full droop to see if I can drop the strut a little lower in the knucle, which should let me run a slightly longer insert without too many issues.

But hey, maybe I'm just swimming up the stream with the project and I should just let someone build me what I'm after. That decision will have to wait until after I get a chance to call.

-Grant
Please Login or Register to post a reply
Josh Wimpey
Josh Wimpey
Senior Moderator
Location: VA
Join Date: 12/27/2006
Age: Midlife Crisis
Posts: 649

Rally Car:
Sneak the Golf


Re: Mk4 VW suspension thoughts
December 17, 2013 03:51PM
Grant, I am running an Mk2 not an mk4 so the rears are already spring-over shock design so it was easy.

We try to keep camber and toe both as close to zero as possible for gravel.



____________________________________________________________-

One. Class -- 2WD

www.quantumrallysport.com

http://www.facebook.com/home.php?#/pages/Quantum-Rally-Sport/281129179600?ref=nf
Please Login or Register to post a reply
john vanlandingham
John Vanlandingham
Elite Moderator
Location: Ford Asylum, Sleezattle, WA
Join Date: 12/20/2005
Age: Fossilized
Posts: 14,152

Rally Car:
Saab 96 V4



Re: Mk4 VW suspension thoughts
December 17, 2013 04:54PM
Quote
Grantmac


John:

As for plating and materials I wasn't going to use anything exotic (steel) and I intend on finishing with a firearms enamel based coating such as Duracoat. Maybe not optimum, but it should do the job.
I'm also going to look at the clearance between the strut and the driveshaft at full droop to see if I can drop the strut a little lower in the knucle, which should let me run a slightly longer insert without too many issues.

But hey, maybe I'm just swimming up the stream with the project and I should just let someone build me what I'm after. That decision will have to wait until after I get a chance to call.

-Grant

Ah but you must if you want the damn things to last. 4130 DOM
I'm in the budniss and it took me 10-11 months to find the right stuff...It as to be right ID---unless you want to spend even more effort/time/money boring the ID with 1 thou accuracy...
Gotta be thick enough to carve threads on..
That shit is expensive...the whole process is such that the minimum run to do really is about 40 parts. seriously.
Production, scale, unit cost, that sorta stuff. (spreading out the cost of any given fuck up out.)
Can't paint on the threaded portion---its feels off then jams the spring seats---



John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.
Please Login or Register to post a reply
DexterVW
David Baker
Elite Moderator
Location: Rhode my Island
Join Date: 11/20/2008
Age: Midlife Crisis
Posts: 290

Rally Car:
95 GTI TDI


Re: Mk4 VW suspension thoughts
December 17, 2013 04:57PM
Now this is what I'm talking bout! Thanks John and Grant! I have a new found respect for what John does but I still love people trying to do it themselves winking smiley
Please Login or Register to post a reply
Grantmac
Grant MacDonald
Junior Moderator
Location: Victoria, BC
Join Date: 12/15/2013
Age: Midlife Crisis
Posts: 18

Rally Car:
None


Re: Mk4 VW suspension thoughts
December 17, 2013 08:29PM
Josh:
Zero camber, very interesting. I always thought that people ran just a little negative so that when the weight transferred to the rear and the front came-up then the tires would be right at zero instead of positive.
I also ponder whether the Mk4 running ungodly amounts of caster actually has less traction on the inside wheel during slow turns due to the wheel gaining lots of positive camber. My thought was that running enough negative static camber to make the inside wheel near zero camber at the steering angles used for a fairly slow turn would be beneficial. At higher speeds the weight transfer would be more apparent, but at low speed there isn't much to speak of.
I know that running excess caster on my RWD autoX car caused weight-jacking which lead to poor traction out of corners. There is much to think about when you are getting the same wheels to do all the work.

Quote
john vanlandingham

Ah but you must if you want the damn things to last. 4130 DOM
I'm in the budniss and it took me 10-11 months to find the right stuff...It as to be right ID---unless you want to spend even more effort/time/money boring the ID with 1 thou accuracy...
Gotta be thick enough to carve threads on..
That shit is expensive...the whole process is such that the minimum run to do really is about 40 parts. seriously.
Production, scale, unit cost, that sorta stuff. (spreading out the cost of any given fuck up out.)
Can't paint on the threaded portion---its feels off then jams the spring seats---

The inserts I'm looking at provide the clearances and bearing surfaces, they are designed to fit inside a wet strut. But perhaps that won't work since it seems that the P36-0370 insert that I thought had 160mm of travel really has about 115mm. But that just comes from an Audi forum, I wish Bilstein would publish dimensions on their stuff like other manufacturers do. Also if they had an easy reference for which strut inserts were used for a particular assembled strut, that would be useful.

The paint I'm referring to was specifically designed to be used inside firearms, it is ever possible to get it with friction reducers built in. So I'm fairly confident it would work well in the application. It's not expensive or a difficult process so no big deal if it doesn't pan out.

-Grant
Please Login or Register to post a reply
Robert Culbertson
Out of this dumpster fire
Godlike Moderator
Join Date: 08/15/2010
Posts: 1,236



Re: Mk4 VW suspension thoughts
December 17, 2013 09:04PM
Quote
Grantmac

The inserts I'm looking at provide the clearances and bearing surfaces, they are designed to fit inside a wet strut. But perhaps that won't work since it seems that the P36-0370 insert that I thought had 160mm of travel really has about 115mm. But that just comes from an Audi forum, I wish Bilstein would publish dimensions on their stuff like other manufacturers do. Also if they had an easy reference for which strut inserts were used for a particular assembled strut, that would be useful.

The paint I'm referring to was specifically designed to be used inside firearms, it is ever possible to get it with friction reducers built in. So I'm fairly confident it would work well in the application. It's not expensive or a difficult process so no big deal if it doesn't pan out.

-Grant
What are the top pin dimensions for the mk4? Could you use a mk2/3 insert in a custom housing? How about a picture of a stock strut and insert?
I made my own ghetto coil-overs because I'm near broke most of the time, and I also like to make things. The coil-over sleeve sits on the bracket that holds the knuckle/upright. The sleeves are about $40/ea.




Someday I'll pull my inserts out and measure them, then call John so I can get them extended. Or.... I can pull them apart myself smiling smiley Muahahaha!
Please Login or Register to post a reply
john vanlandingham
John Vanlandingham
Elite Moderator
Location: Ford Asylum, Sleezattle, WA
Join Date: 12/20/2005
Age: Fossilized
Posts: 14,152

Rally Car:
Saab 96 V4



Re: Mk4 VW suspension thoughts
December 17, 2013 10:57PM
Quote
Robert Culbertson
Quote
Grantmac

The inserts I'm looking at provide the clearances and bearing surfaces, they are designed to fit inside a wet strut. But perhaps that won't work since it seems that the P36-0370 insert that I thought had 160mm of travel really has about 115mm. But that just comes from an Audi forum, I wish Bilstein would publish dimensions on their stuff like other manufacturers do. Also if they had an easy reference for which strut inserts were used for a particular assembled strut, that would be useful.

The paint I'm referring to was specifically designed to be used inside firearms, it is ever possible to get it with friction reducers built in. So I'm fairly confident it would work well in the application. It's not expensive or a difficult process so no big deal if it doesn't pan out.

-Grant
What are the top pin dimensions for the mk4? Could you use a mk2/3 insert in a custom housing? How about a picture of a stock strut and insert?
I made my own ghetto coil-overs because I'm near broke most of the time, and I also like to make things. The coil-over sleeve sits on the bracket that holds the knuckle/upright. The sleeves are about $40/ea.



Someday I'll pull my inserts out and measure them, then call John so I can get them extended. Or.... I can pull them apart myself smiling smiley Muahahaha!

Whaddya broke for? Those are the ever so annoying things that I've re-done for the poooooor bastids that get told that's the way to do it.
Long lower slider/tube, 160mm travel, valved 300/100, and the wasteful locating register that burns up overall length.

Its a start, and its what you have..
Now Grant here keeps referring to some other stuff which I think is the junk like this:


That's what I think he's trying to say they go in a normal "wet' ---whatever the fuck that's supposed to mean---tube.

Those are the same basic insert 40mm---and in most applications valved utterly wimp-u-larly lame....
Problem is that standard tube have a wall thickness like cheesoid exhaust tubing and are mildly put "noodly"
Can you say "bind" and "Bend"?

Second problem with those this is the rod is threaded only about 12mm..It threads into a bottom part like this:
and center punched twice to lock them in, big pain in the ass...

The things YOU have Robert, like the custom ones I supply have the rod threaded about 18-19mm so we can thread it thru the bottom---about 10mm thick---the run a jam nut down on the protruding end to lock the insert in.
So we can salvage something there (hack the ears and the bottom off, double the stingy 18mm tall bearings) shorten tube, re-do the insert pin to save maybe 15-19mm LOA

Grant, considering that Bilstein makes maybe 8000-9000 part numbers with a million detail differences and 8000 valving and length options---
serious what the hell you think that you are going to figure out?
WHO lists any meaningful data on their stuff?
Link or it didn't happen.

I know a little info here and there but are you "effluent" in technical German and/or Swedish? noch, junge , bist du?



John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.
Please Login or Register to post a reply
Grantmac
Grant MacDonald
Junior Moderator
Location: Victoria, BC
Join Date: 12/15/2013
Age: Midlife Crisis
Posts: 18

Rally Car:
None


Re: Mk4 VW suspension thoughts
December 17, 2013 11:04PM
Robert:

What model upright is that? Have you ever taken the insert out just to have a look? Could you throw some calipers on the outside of the tube and get me the diameter?

I've actually been toying with getting some junkyard STI struts and doing a bracket-ectomy then running threaded sleeves like you've got there. They are supposed to be a decent damper and people have revalved them. Bonus is they are built to work with the strut-tops I want to use and I can get them for <$200 for a pair with the top mounts. Still only 160mm of travel though and unlike the Bilsteins I couldn't get them upgraded later in life.

-Grant
Please Login or Register to post a reply
john vanlandingham
John Vanlandingham
Elite Moderator
Location: Ford Asylum, Sleezattle, WA
Join Date: 12/20/2005
Age: Fossilized
Posts: 14,152

Rally Car:
Saab 96 V4



Re: Mk4 VW suspension thoughts
December 18, 2013 12:19AM
Quote
Grantmac
Robert:

What model upright is that? Have you ever taken the insert out just to have a look? Could you throw some calipers on the outside of the tube and get me the diameter?

I've actually been toying with getting some junkyard STI struts and doing a bracket-ectomy then running threaded sleeves like you've got there. They are supposed to be a decent damper and people have revalved them. Bonus is they are built to work with the strut-tops I want to use and I can get them for <$200 for a pair with the top mounts. Still only 160mm of travel though and unlike the Bilsteins I couldn't get them upgraded later in life.

-Grant

40mm



John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.
Please Login or Register to post a reply
Sorry, only registered users may post in this forum.

Click here to login