rallysmurf alex morgan Super Moderator Location: fritch tx Join Date: 01/25/2006 Age: Possibly Wise Posts: 71 Rally Car: '74 bmw 2325i |
I am real open to what kind of trans to get.
i am fabing a bmw bellhousing to fit and using a hydrolic throwout bearing and making my flywheel with a 4.5/5.5 tilton. i have not got my clutch yet so any spline will work. after scowering around looking at ratios and such i would like ot get lucky and find a quaife 4sp rocket for around 1500. but that is $500 for that my max. A muncie m21 has close to the ratios i want. 2.20 1.64 1.28 1.00 http://i18.ebayimg.com/04/i/06/63/55/d1_12.JPG doug nash 5 speed straight cut go for around 1k 3.25 2.07 1.53 1.24 1.00 http://i18.ebayimg.com/04/i/06/3f/5f/5c_12.JPG http://cgi.ebay.com/ebaymotors/Doug-Nash-4-1-Drag-race-transmission-5-speed-proshifted_W0QQcmdZViewItemQQcategoryZ33733QQitemZ8042220970QQrdZ1QQsspagenameZWDVW __________________________ i'm in texas panahndle, full of gas and oil wells to slalom. http://bcdracing.com//pics/rally/rally.html Edited 1 time(s). Last edit at 03/03/2006 09:25AM by rallysmurf. |
NoCoast Grant Hughes Godlike Moderator Location: Whitefish, MT Join Date: 01/11/2006 Age: Midlife Crisis Posts: 6,818 Rally Car: BMW |
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rallysmurf alex morgan Super Moderator Location: fritch tx Join Date: 01/25/2006 Age: Possibly Wise Posts: 71 Rally Car: '74 bmw 2325i |
NoCoast Wrote:
------------------------------------------------------- > Burton Power in the UK has some cheapish Rocket > straight cut boxes. (And a bell housing adapter > to the Duratec motors, which is off subject but I > had to point it out) > > Grant Hughes > www.nocoastmotorsports.net > Denver, CO > Professional hand model > > > > Edited 1 times. Last edit at Mar 3, 2006 by > NoCoast. i have a line on a jerico 4 speed thats need a input. which is good b/c then i cen get what ever clutch i can find for cheep then match the input to it. there are a lot of jerico trans around from nascar. i found this one off a GT1 forum. http://www.gt1da.com/board/index.php?showforum=16 there is a guy in the springs that used one for the hillclimb series but want to much for it. http://www.chcaracing.com/classified.html __________________________ i'm in texas panahndle, full of gas and oil wells to slalom. http://bcdracing.com//pics/rally/rally.html |
Richard Miller Richard Miller Godlike Moderator Location: Sachse Texas Join Date: 01/25/2006 Age: Ancient Posts: 187 Rally Car: Saab 900T, Mustang now running |
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rallysmurf alex morgan Super Moderator Location: fritch tx Join Date: 01/25/2006 Age: Possibly Wise Posts: 71 Rally Car: '74 bmw 2325i |
i was thinking starting with 2.0 in a 4 speed.
here are some pospular ratios. what do you guys think? http://www.needforspeed.co.uk/pages/sbv_pl.asp?CurCode=US&PartType=GBT01&Vehicle=UV___01 here is what jerico has 4 SPEED GEAR RATIO CHART MD SET 29/20 28/20 29/21 28/21 27/21 27/22 26/22 26/23 25/23 25/24 24/24 24/25 MD RATIO 1.450 1.400 1.381 1.333 1.286 1.227 1.182 1.130 1.087 1.042 1.000 0.960 1st GEAR 34/15 3.287 3.173 3.130 3.022 2.914 2.782 2.679 2.562 2.464 2.361 2.267 2.176 33/15 3.190 3.080 3.038 2.933 2.829 2.700 2.600 2.487 2.391 2.292 2.200 2.112 34/16 3.081 2.975 2.935 2.833 2.732 2.608 2.511 2.402 2.310 2.214 2.125 2.040 33/17 2.815 2.718 2.681 2.588 2.496 2.382 2.294 2.194 2.110 2.022 1.941 1.864 32/18 2.578 2.489 2.455 2.370 2.286 2.182 2.101 2.010 1.932 1.852 1.778 1.707 31/18 2.497 2.411 2.378 2.296 2.214 2.114 2.035 1.947 1.872 1.794 1.722 1.653 32/19 2.442 2.358 2.326 2.246 2.165 2.067 1.990 1.904 1.831 1.754 1.684 1.617 31/19 2.366 2.284 2.253 2.175 2.098 2.002 1.928 1.844 1.773 1.700 1.632 1.566 30/20 2.175 2.100 2.071 2.000 1.929 1.841 1.773 1.696 1.630 1.563 1.500 1.440 30/21 2.071 2.000 1.973 1.905 1.837 1.753 1.688 1.615 1.553 1.488 1.429 1.371 2nd GEAR 29/20 2.103 2.030 2.002 1.933 1.864 1.780 1.714 1.639 1.576 1.510 1.450 1.392 28/20 2.030 1.960 1.933 1.867 1.800 1.718 1.655 1.583 1.522 1.458 1.400 1.344 29/21 2.002 1.933 1.907 1.841 1.776 1.695 1.632 1.561 1.501 1.438 1.381 1.326 28/21 1.933 1.867 1.841 1.778 1.714 1.636 1.576 1.507 1.449 1.389 1.333 1.280 27/21 1.864 1.800 1.776 1.714 1.653 1.578 1.519 1.453 1.398 1.339 1.286 1.234 27/22 1.780 1.718 1.695 1.636 1.578 1.506 1.450 1.387 1.334 1.278 1.227 1.178 3rd GEAR 26/22 1.714 1.655 1.632 1.576 1.519 1.450 1.397 1.336 1.285 1.231 1.182 1.135 26/23 1.639 1.583 1.561 1.507 1.453 1.387 1.336 1.278 1.229 1.178 1.130 1.085 25/23 1.576 1.522 1.501 1.449 1.398 1.334 1.285 1.229 1.181 1.132 1.087 1.043 25/24 1.510 1.458 1.438 1.389 1.339 1.278 1.231 1.178 1.132 1.085 1.042 1.000 24/24 1.450 1.400 1.381 1.333 1.286 1.227 1.182 1.130 1.087 1.042 1.000 0.960 24/25 1.392 1.344 1.326 1.280 1.234 1.178 1.135 1.085 1.043 1.000 0.960 0.922 23/25 1.334 1.288 1.270 1.227 1.183 1.129 1.087 1.040 1.000 0.958 0.920 0.883 23/36 1.283 1.238 1.222 1.179 1.137 1.086 1.045 1.000 0.962 0.921 0.885 0.849 4th GEAR 1 to 1 1 to 1 1 to 1 1 to 1 1 to 1 1 to 1 1 to 1 1 to 1 1 to 1 1 to 1 1 to 1 1 to 1 1 to 1 __________________________ i'm in texas panahndle, full of gas and oil wells to slalom. http://bcdracing.com//pics/rally/rally.html |
NoCoast Grant Hughes Godlike Moderator Location: Whitefish, MT Join Date: 01/11/2006 Age: Midlife Crisis Posts: 6,818 Rally Car: BMW |
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rallysmurf alex morgan Super Moderator Location: fritch tx Join Date: 01/25/2006 Age: Possibly Wise Posts: 71 Rally Car: '74 bmw 2325i |
i found a 4.27 with 14'' wheels.
__________________________ i'm in texas panahndle, full of gas and oil wells to slalom. http://bcdracing.com//pics/rally/rally.html |
NoCoast Grant Hughes Godlike Moderator Location: Whitefish, MT Join Date: 01/11/2006 Age: Midlife Crisis Posts: 6,818 Rally Car: BMW |
I'd narrow you choices to:
1st: 2.781, 2.681, 2.588, 2.464, 2.361 2nd: 1.714, 1.653 3rd: 1.381, 1.333 4th: 1 Another thing too, is where your optimum power band is going to be and what you plan on spinning to? Which I guess is important. I narrowed based upon common 4 speed rally gearboxes, but those are generally used on more pissed race motors So why are you going with Jerico? I know nothing about them other than that some of the CHCA guys use them. Grant Hughes |
rallysmurf alex morgan Super Moderator Location: fritch tx Join Date: 01/25/2006 Age: Possibly Wise Posts: 71 Rally Car: '74 bmw 2325i |
the jerico is the cheepest straight cut dog engament 4 speed.
if i were in teh uk it would be quaife. in america gota go with what there are a lot of. i found one for 1700. my motor reds at 6k 128 hp @ 4800 RPM 170 lb-ft torque @ 3200 RPM in stock form. with my larger throtle body and intake from what i have read it will be more like 180 hp @ 6000 RPM 190 lb-ft torque @ 3200 RPM so you think first should be no lower than 2.3? thanks alex __________________________ i'm in texas panahndle, full of gas and oil wells to slalom. http://bcdracing.com//pics/rally/rally.html |
Scott Manley Scott Manley Mod Moderator Location: Spokompton, WA Join Date: 01/03/2006 Age: Possibly Wise Posts: 226 Rally Car: XR4Ti |
Alex- Why the expensive tranny? Or is that what it takes to get the gears you want? What not a T-5? A stock one would hold up forever at only 190lbs torque. BTW, don't believe everthing you read about bigger TBs and intakes. I would guess the Beemer is not that much different then 95% of the cars on the road and that one could reasonably expect an increase of maybe 5-10hp from those mods. But maybe BMW is special.
Scott Manley Spokane, WA 86' XR4Ti 37 |
rallysmurf alex morgan Super Moderator Location: fritch tx Join Date: 01/25/2006 Age: Possibly Wise Posts: 71 Rally Car: '74 bmw 2325i |
well, my thought on the trans are it is worth that much
and if i change cars some day jericos hold there value. it is very important to have a close ratio box. i can't get a t5 that close fo that kind of money. you mihgt be right on the HP. i am fig off the stock amount to find my power band. like 3200-5000. but i am sure there is a sweet spot in there that lasts only 1000 rpms. it does have larger 18lbs injectors and a bigger HFM. alex __________________________ i'm in texas panahndle, full of gas and oil wells to slalom. http://bcdracing.com//pics/rally/rally.html |
john vanlandingham John Vanlandingham Infallible Moderator Location: Ford Asylum, Sleezattle, WA Join Date: 12/20/2005 Age: Fossilized Posts: 14,152 Rally Car: Saab 96 V4 |
rallysmurf Wrote:
------------------------------------------------------- > the jerico is the cheepest straight cut dog > engament 4 speed. > if i were in teh uk it would be quaife. Ugh. Try Tran-X in america > gota go > with what there are a lot of. i found one for > 1700. But only 4 speed. > > > my motor reds at 6k > > 128 hp @ 4800 RPM > 170 lb-ft torque @ 3200 RPM > > in stock form. > > with my larger throtle body and intake from what i > have read > it will be more like > > 180 hp @ 6000 RPM > 190 lb-ft torque @ 3200 RPM With that for power and the 4.27 final drive I'd say shoot for something lower, like 2,7. but thats close enough to a T5 with the 2.95 that I'd say go for the T5 and have a 5th you could cruise out to the oilfields to. Alex for a given powerband, and yours is deffo stock-ish, it's all about an interplay of box and axle. If you motor makes LOTS of torque then the boxx and the axle doesn't have to be short and help as much, but your proposed motor is essentially stock-ish, not like a little 1600 16v, you very very likely don't have any need for a really close gearset. A really close gearset is there to help keep the motor right in the powerbands sweet spot (and really close is like 2.3 for 1st and 1:1 4th or top, an ULREA close would be something with like 2.0 first/1 top) It's kinda funny I suggest to you to make a smaller motor, make it hot, and that mandates a short final drive and somewhat close gears but you decided on a BIG Torque-monster and a moderate final drive but seem convinced you need close ratios. I am not convinced you need a closer box than the "good" 2.95 T5. (and to some degree that's considering the terrain you'll likely see---hell we barely climb anything here in WA eeven tho we're in the mountains usually) > > so you think first should be no lower than 2.3? 4.0:1 is low, 2.3:1 is high a 5.1 final drive is low, a 3.36 final drive is high. Terminology, eh Think about this, a T5 might cost you 350 to 700 for a 2.95 box, they go for 1100 new. And you don't need dog box not for the low level we rally at. > > thanks alex > > > > __________________________ > > i'm in texas panahndle, > full of gas and oil wells > to slalom. > > 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. |
NoCoast Grant Hughes Godlike Moderator Location: Whitefish, MT Join Date: 01/11/2006 Age: Midlife Crisis Posts: 6,818 Rally Car: BMW |
John just echoed kind of what I was going to say but hadn't typed yet. If your not going crazy on the motor and sticking to a stockish motor than you'd be fine with a stock T5 non-WC, which you can if you do in the future upgrade your motor to need the shorter ratios get a good dog gear kit from. And, there's lots of T5 cases all over the place for dirt cheap. I could probably find a T5 empty case locally in about 5 minutes for 100-150, and their made for big horsepower, which means it should last! A local school here is putting a Tremec in their road race 2002.
Grant Hughes |
Richard Miller Richard Miller Godlike Moderator Location: Sachse Texas Join Date: 01/25/2006 Age: Ancient Posts: 187 Rally Car: Saab 900T, Mustang now running |
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rallysmurf alex morgan Super Moderator Location: fritch tx Join Date: 01/25/2006 Age: Possibly Wise Posts: 71 Rally Car: '74 bmw 2325i |
john vanlandingham Wrote:
------------------------------------------------------- > > With that for power and the 4.27 final drive I'd > say shoot for something lower, like 2,7. > but thats close enough to a T5 with the 2.95 that > I'd say go for the T5 and have a 5th you could > cruise out to the oilfields to. > > > Alex for a given powerband, and yours is deffo > stock-ish, it's all about an interplay of box and > axle. > If you motor makes LOTS of torque then the boxx > and the axle doesn't have to be short and help as > much, but your proposed motor is essentially > stock-ish, not like a little 1600 16v, you very > very likely don't have any need for a really close > gearset. > A really close gearset is there to help keep the > motor right in the powerbands sweet spot (and > really close is like 2.3 for 1st and 1:1 4th or > top, an ULREA close would be something with like > 2.0 first/1 top) > > It's kinda funny I suggest to you to make a > smaller motor, make it hot, and that mandates a > short final drive and somewhat close gears but you > decided on a BIG Torque-monster and a moderate > final drive but seem convinced you need close > ratios. > > I am not convinced you need a closer box than the > "good" 2.95 T5. > > > Think about this, a T5 might cost you 350 to 700 > for a 2.95 box, they go for 1100 new. > > And you don't need dog box not for the low level > we rally at. http://fatboyraceworks.com/gears/index.php?MaxRPM=6000&TireDiameter=23.5&GearRatio1=1.93&GearRatio2=1.40&GearRatio3=1.13&GearRatio4=1&GearRatio5=&GearRatio6=&FinalDrive=4.27&TireWidth=195&TireAspect=55&RimDiameter=14&MaxRPM_2=6000&TireDiameter_2=23.5&GearRatio1_2=2.95&GearRatio2_2=1.94&GearRatio3_2=1.34&GearRatio4_2=1&GearRatio5_2=0.63&GearRatio6_2=0&FinalDrive_2=4.27&TireWidth_2=195&TireAspect_2=55&RimDiameter_2=15&Calculate=Calculate%2FGraph&Compare=1 here is a chart on the two options. jerico striaght dogbox for 1800 shipped. t5 striaght dogbox 2400. update: who am i kidding.......... i could finish my car for 2k. alex __________________________ i'm in texas panahndle, full of gas and oil wells to slalom. http://bcdracing.com//pics/rally/rally.html Edited 3 time(s). Last edit at 03/10/2006 10:13AM by rallysmurf. |