Mk4 Rick

What do you think of them, the Americans seem to do well in there civics running high comp turbo engines and I think there is some one on here with one in the UK.I no the fueling would have to be spot on though

SBT83

Would be running on the limit all the time. And running a few psi at max. If your gonna do it go low comp

zippyobrien

iTrader: (2)

Not at all. Very mid informed respons there. Most modern turbo engines are higher comp. can run more ignitions them. Internals still need to be forged for high boost.

Mk4 Rick

I used to drive a Volvo 1.9 t4 and that's wasn't low cr it was some thing like 9:1 and that had 200bhp out of the box but it had to run on super all the time.

Rod-Tarry

My YB is 8.5:1 cr & 2.8bar across the rev range. That cant work then .

SBT83

I was referring to turbo charging a NA engine not a modern purposely built high comp Turbo engine. Don't get me wrong they work as intended, but if you CHOSE to turbo charge an engine in high comp it may not last long as the op said fuelling has to be spot on.

I know a vaux lad running a standard 2.0 8v with a turbo strapped on and his runs well at 10 psi. I don't know why, it must be a good engine.

Mk4 Rick

Is the cr on your engine the same on all the the cosworth or are they lower

Mk4 Rick

It must be the set up then.There is some Civics that are on std cr with std parts and there producing big numbers.I think the guy that has one on here is called Ricky I think.

SBT83

I can only comment on what I have experienced my self. I do know the Honda boys play with their engines and get good gains. Is it Buddy Club that has he universal turbo kit that's supposed to be the dogs nuts?

Fiesta_Jed

Cams are a massive factor when it comes to compression ratios, Hondas that have vtec can run high comp and big boost because in vtec they have massive cams.

GVK.

He's the 'race-tech' guy isn't he with the Hondas?

Rod, yours is a Cossie with what's essentially an old Transit bottom end, it's not the same as these modern high CR turbo motors being mentioned!

VW TFSI 2.0 turbo is 10.3:1 and direct injected for info. High CR will help the off boost response, but of course the tuning must be spot-on.

GVK.

I believe it's called 'dynamic compression ratio' but I'm no expert.

SBT83

In all fairness Rod, and no disrespect as I look up to you and your projects. But not everyone has the doe to go the whole nine yards with bespoke parts and a full on custom engine. But not everyone has your knowledge either

Mk4 Rick

Ive no idea to be honest im gonna do some reading up on it

Mk4 Rick

That's very interesting that mate I never new that the VW TFSI ran a high comp engine and they don't half shift lol

Mk4 Rick

I couldn't tell you to be honest it was a while ago since I read it lol.

GVK.

Yep - https://www.facebook.com/RaceTechMotorsportLtd

Some graphs on there - 505hp from a B18c4 (is that an Integra motor?) with race tech turbo kit and tuning.

Yeh, the VW TFSI is a good engine, my ex has an Edition 30 which is 230ps stock, remapped 280hp/310lb/ft, went very well with little lag!

SBT83

Yep it is good engine!

GVK.

I'm lost with Jap engine codes SR20DETTTTTTTTT etc!

SBT83

Tell me bout it mines 2zz ge and then there's the 1zz fe blah blah lol. Lotus used the 2zz ge too come to think bout it toyota and lotus supercharged the engine on stock internals. Don't know much about it tho. I know it was fitted to corollas

gjh

I believe a standard cossie is 8:1

Fiesta_Jed

B18c4 came in mb9 civics.

B18c5/6 came in Dc2 integras

C4 has milder cams and Lower CR so better for boosting.

Mk4 Rick

I carnt believe the civic is producing that power on stock engine and I bet the vag goes well with 230bhp on high compression lol

Mk4 Rick

Did they ever produce a 2litre version?

Mk4 Rick

That's some thing I never knew

Fiesta_Jed

Yes, the B20.

Mk4 Rick

Think my other half has a 1jz ge in here lexus is 200

Mk4 Rick

Was it realiable as an engine and was it ever turbo charged on stock parts lol

bassboy

With such high figures on the B16 and B18 engines, are they a better starting point than a K20 turbo engine? Anyone know?

vaughant

iTrader: (1)

Metro turbo was high compression...












But a pile if steaming shite!!!
Did have a digital boost gauge though!!!

GVK.

^^ and a chocolate gearbox Mate had a sexy beige one back in the day, regularly off the road with a fecked 'box.

Acidburn

lmao

it cost that much he even got a free driver for those all important top speed runs.

JamesH

iTrader: (21)

It's all about peak cylinder pressure, which no one on this thread will have measured on their said engines.

So it's just trial and error to see if it works. Once a few people have tried it and had no problems, it would be regarded as fine!

It's Czech Mate

He said HIGH Comp

Rod-Tarry

Is that so I dont know you but get your facts straight. 3 of the 8 fastest runs runs ever by a Cossie are down to a pensioner lets wait till you are 68 a see what you can do.
Im 22 years older than Mark , he will always be quicker than me like he is quicker than MADAde in his own car. Get a bit fed up with this shite from kids that barrack from the sidelines & do jack shite so STFU.

XRT_si

iTrader: (2)

To be fair, all the Americans seem to:
A) Run rocket fuel
B) Lie

vaughant

iTrader: (1)

Yep just about the worst gearbox out there,made the UNO turbo box look strong!!!!

And rod,don't let it bother you fella,you like a good wind up same as the rest of us.
Your cars still the top dog by some way fella and anyone doing 200 mph in an old sierra must have some BIG BALLS!!!!

It's Czech Mate

Edited for you, lets not get carried away

SBT83

Twellsie

iTrader: (1)