Ultimate Group 2 Cossie engine...

http://www.jemsracing.co.uk/CLF156.engine.pdf

Nice. Did he get those motor mount brackets from Medcroft Racing?

http://race-cars.com/engsales/cosworth/1126773358/1126773358ss.htm ?

I mean, it says "Cosworth" on it, so it must be legal to put in an Xratty, right? Right?

Slightly more seriously, interesting to look at that YB build.

Cool build - now back to reality, what's that likely to cost?

Dave

Looks pretty stellar, but 250ft-lb from 2547cc? That smells a tiny bit fishy, unless their "pump fuel" is something truly spectacular.

On the other hand, GMPP's Ecotec book has a recipe for a engine of similar output. (Yeah, I'm jumping on the Ecotec bandwagon, the more I look the more I like)



Edited 1 time(s). Last edit at 11/26/2011 04:03PM by Pete.

Quote
DaveK
Cool build - now back to reality, what's that likely to cost?

Dave

Probably $30,000 at least or 35K.

nice intake set up...(teeee heeee).
Picture later...

---

John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
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Quote
Pete
Looks pretty stellar, but 250ft-lb from 2547cc? That smells a tiny bit fishy, unless their "pump fuel" is something truly spectacular.

On the other hand, GMPP's Ecotec book has a recipe for a engine of similar output. (Yeah, I'm jumping on the Ecotec bandwagon, the more I look the more I like)

where'd you see the ft/lbs?

And what's so wrong with 250?
We saw just a short while ago in the "wher do you guys get your ideas from" that 189 ft/lbs in 2,0 rally motors was what Pipo Moteur in France makes for Fords and Citroens.
So is 250 ft/lbs really so out there for 2550cc?

---

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.

There's a dyno graph on the last page, I zoomed in 300% to read the graph well enough. Torque sticks right on the 250 line for a few hundred RPM.

189ft-lb for 2 liters is say 95ftlb/l (which is freakin' GOOD)... extrapolate to 2.55l and that's 242 or about 3% shy... where did they find the extra 3%?

Like I said, I'm not calling BULLSHIT but it doesn't *seem* right, you know? Especially for an engine that makes its torque so relatively low RPM-wise.

Quote
Pete
There's a dyno graph on the last page, I zoomed in 300% to read the graph well enough. Torque sticks right on the 250 line for a few hundred RPM.

189ft-lb for 2 liters is say 95ftlb/l (which is freakin' GOOD)... extrapolate to 2.55l and that's 242 or about 3% shy... where did they find the extra 3%?

Like I said, I'm not calling BULLSHIT but it doesn't *seem* right, you know? Especially for an engine that makes its torque so relatively low RPM-wise.

Would fret it too much, its just a magazine feature.

---

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.

That's also on an engine dyno, not your usual DynoJet wheel roller numbers...

But wouldn't it be fun to show up with that for a Rally America event as a complete noob, just to show the silliness of the no noobs in g5 rule...

Is it just me or does the entire classing seem based on the idea that everything but Open class guys don't prepare to anywhere near the limit of the rules? I mentioned the rotary porting stuff to Mike Hurst who said that they were intending somewhere around 200hp at the flywheel and so required stock port rotaries... and fine and all. But if anyone did build a piston engine Gr2 car to the limits of the rules... there's this thread's example of something that would be legal, making 330hp at the crank out of 2.5L, I'd bet the BMW or some other 3L 6s could be making over 400hp at the crank if it were necessary... leaving aside the question of if the Cossie F-1 engine I linked would technically be counted as a Ford and thus legal. Or slightly more seriously, the Cosworth ex-DTM engines that someone got the tooling for and is selling... they're probably completely Gr2 legal in something with the right badging on the hood.

Now, I've seen a figure of about 240hp or something thrown around as an approximate limit for what's useful out of 2wd, and you can do that easily within the scope of the rules any number of ways, or absolutely murder that number if you wanted to throw money at it (not that anyone bothers) So what's the point of Gr5?

Coming from SCCA roadracing where people *do* build to the limit of the rules, Rally America confuses me.

Quote
fiasco
That's also on an engine dyno, not your usual DynoJet wheel roller numbers...

But wouldn't it be fun to show up with that for a Rally America event as a complete noob, just to show the silliness of the no noobs in g5 rule...

whaddya mean silliness?
If it doesn't have a turbo then nobody can possibly get hurt.

Get with it, doooooood.

---

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.

Quote
DaveK
Cool build - now back to reality, what's that likely to cost?

Dave

Probably like 10k GBP. Oh wait, new block, so maybe 30K GBP...

Yeah... My first thought, how many cars could be built for the price of that engine.