CossieRich

iTrader: (1)

I think stu/karl should be aiming for big torque figures rather than BHP. After all torque gives you the acceleration

Azrael

Iam by no way an expert in the matter so just my 2p to the max power discussion. I remmeebr from the talk with POlish ralycross champion that when he raced an Escort (he now Races RS500 powered Focus) he run perfectly standard engine a few times and it made far more then 400BHP but it used to expode quite often - it was usually piston ring failure from what he said. They run somethiung like 3 bar of boost on T4 -> I don't know if that's possible, but they said someting like that.

brad

i dont see why you couldnt get 600 bhp from a standard yb ?
after all no one has said they want to build an engine that will last forever . if its just gna be trying to get as much as possible before going bang , then i can see at least 550 maybee 600 with the right hairdryer and jectors . after all its all to do with putting the fuel and air thru quick enuff isnt it .

Disabled Account

Spot on mate.........IIRC In the Formula 1 turbo era the engines were 1400 cc and in qualifing were producing over 1000 BHP

They used a more durable version of the engine for the actual race on the Sunday.........but those were still over 800 BHP from a 1.4 litre

Mike Rainbird

iTrader: (3)

Yeah, you can really compare a mono-block/head (i.e. the block and head were a ONE piece design) F1 engine to a YB engine. And they were 1.5 litres .

Disabled Account

Ooops, sorry Mike......they were indeed 1.5 litre F1 engines......

I must have been thinking of the Renault 5 Turbo boys - they get huge power from thier tuned 1.4 litres too - also on srandard bottom ends with 2 valves per cylinder and pushrods

Mike Rainbird

iTrader: (3)

Doug,
Please also insert the following word in front of "power" in your above sentence "claimed" .

brad

you can compare what you like at this stage as its simply hypothetical , i think if doug was really comparing the two he would have said a yb could produce 1250bhp as its a 2 litre .

Disabled Account

We will get Steve to confirm the above - AFAIK he is our R5 turbo/power/tuning GURU

Azrael

With unlimited budget something similar to YB would produce this much.

brad

sorry m8 , but not with standard internals it couldnt . it would all turn to chocolate a long time b4 it reached that kinda figure

would be nice tho

Stavros

Ive seen 218bhp@wheels from a 100% std GTT bottomend is the most IVE seen PROVEN, but that was with a very small turbo and STANDARD intercooler (just a very trick small turbo, mental headwork, and 2bar boost), i think others have proven more tho, but unsure.
GT Tuning used to claim 300 from theirs with a std bottomend, but was never proven barring 12.6sec 1/4s...

Ive seen a 360bhp@flywheel figure from a non std engine (using a .63 T34 from an esc cossie, and Nitrous), but still the normal 2valve (ported) pushrod head n 1400cc. Std crank n rods.

Using the Gordini head 350bhp is easy and im pretty certain figures well above 400 has been done in the past (in turbo2's, its same block, different head).

And back to this engine, i truly belive, providing manifolds are a free choice, that a fair way over 550bhp is possible using a GOOD std engine. Providing the rest is specced right, i dont belive youl hit the limit of the std head ports n cams...

Anonymous

Trade secrets ,Trade secrets, dont want others doing the same. May well be standard on my new one as well but cant say. .

Rod

podge

don't no if its any good but we have a new turbo off a d10 catterpiller that we could donate(if badnews agrees)

big_wig_074

hmmm. dunno,but if you ever decide to test a cvh to death,take mine!as long as i get all the good stuff back with the dead engine if it blows! then remap to slightly less when i get replacement std bits! but obviously not as interesting as yb power,so please,carry on.... oh i reckon 557.236bhp and 501.269 lb/ft rounded up of course to 3 decimal points!

leecavturbo

every pf member put in a Ł5 and go without a big mac for aweek. where do i send mine?

dannyblackpool

fiver for a big mac!!!!!!!!

leecavturbo

big mac and a sausage and egg sandwich then ,think of it as your pre festive christmas diet contribution

dannyblackpool

Disabled Account

Lee, dont think we will need to do that. Will leave it up to Stu to decide whats needed money wise

Also, you gonna be at the Vauxhall versus Ford rolling road shootout tomorrow?? Should be fun - might be a bit far for you: Plymouth.

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Disabled Account

Rod, by trying not to say too much (re port sizes)......You've said plenty

leecavturbo

unfortunately not. but trying to create a decent spec for ten of the best
although i think i can just manage the 175mph qualifying i dont have strong enough drive train to do sub 11 sec 1/4's (or enough money)
autronic plus this gt is in progress

Disabled Account

[/quote]unfortunately not. but trying to create a decent spec for ten of the bestalthough i think i can just manage the 175mph qualifying i dont have strong enough drive train to do sub 11 sec 1/4's (or enough money)
autronic plus this gt is in progress[/quote]

Good luck with the project - GT turbo & manifold looking good

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