this is cool!
puts in perspective how much effort and money is spent in chasing the extra 30-40hp in the formula atlantic engines
this is cool!
puts in perspective how much effort and money is spent in chasing the extra 30-40hp in the formula atlantic engines
the group A also ran wet sumps and had 2 spec motors 215hp for sprint races and 185 hp was for bathurst also had to have std exhaust manifold as well ,coupe was faster than the hatch
also new most of the guys including graham herring who was the engine tech guy
Couple of things, I would of thought with all things being equal, the hatch would be quicker, it has a lower Cd, also a rear spoiler would actually do something on a hatch whereas on a couple nil. Also when talking to Bob Holden back in the day, he said the restriction regardless of cams was the intake manifold.
coupe was lighter
If your talking stripped out race cars, theres not much in it! I would of thought the aero advantage of the hatch would be worth more(which I believe the Japanese were aware of), if you look back at the day in Japan, through the 80's, nearly ALL Corolla cup ae86's, N1, N2 cars, were hatches, infact I can't recall seeing a genuine n1 or n2 car which was sedan(not saying there weren't) also majority of group A cars were hatches, I think the only coupes I have seen were actually raced here.
this is true only raced here same goes for ra40 coupe against ra40 liftback .
to much movement of back hatch and glass is heavier might only be 10 kilos in group A but it all helps and fwd was even faster lighter again
The bloke who built my 4agte actually built some of the TTA 4age's that ran bathurst back in the day, he said the biggest issue they had was that the small crank in the bigport motors would snap after a bit over 1000km's of racing at high rpm.
And just incase you were wondering about credability... My engine builder is Troy Dunstan, he built Fomula Ford engines for a long time and had his engine building shop to fund some of his racing, Including 10th at bathurst in 1992 with Peter Brock, and winning the formula ford driver to europe championship in '91.
4agte KE70 263.6whp
QR Sprint Circuit 1:02.9
QR Sprint Circuit 60.7 (turbo)
QR Clubman Circuit 1:06.41 (first outing NA)
QR Clubman Circuit 1:02.77 (turbo)
http://www.ae86drivingclub.com.au/fo...ustom-Stickers
full colour windscreen banners from $45!
Hey Frak, I own one of the original TTA coupes and just finished the original race engine refresh and is about to go back in.
This was producing plenty of power and revd to 9,200 with the TRD ecu and TVIS.
I should have taken some pics of the internals, Mahles short skirt pistons, knifedge crank, TRD 320 cams and the rest is pretty stock. 7.25" AP button clutch on a lightened flywheel
The car only weighs 900kgs and has the same engine as last raced. I feel so lucky that no one ratted the engine after all these years sitting in the museum.
Interested in the engine pipe you show above. I had to get a new engine pipe made and it is no where as neat as yours.
The car will be run in at World time Attack EC next week and then raced against the others at Muscle Car Masters on fathers day.
Also keen to get copies of the engine dyno sheets.
Rgds Chris
Last edited by Willofan; 3rd August 2012 at 11:11 PM. Reason: grama