[Mk2] [Turbo] rev 2 head. Change cams or head

[Leakie Tbar]

yeah paul i do just read things off the net thats why i cant belive you are running 87mm pistons is 14 years in a garage supposed to impress me. i have taken my cars to them as a last resort before and normally you get a half wit who ends up breaking it even further . mind you if a tyre fitter calls him self a mechanic now whats the world coming to. i have been fixing my own cars for the last 15 years and use the internet to fault find all the time now and its a god send. out of intreast what size is the rev1 2 thottle body? and the rev 3 one please?

I must say a good technician is worth his weight in gold, The faults you must have been fixing over the past 15 years all I can say must have been basic issues on older cars which any so called Tyre fitter or keyboard Mechanic could handle,

Put a decent can bus fault in front of you and you will be on your knees at the garage asking for help,

[turbomax]

hello mate even that sentence confussed me.

Put a decent can bus fault in front of you?

your right about older cars renault 5 turbos,maestro turbos, uno turbos, clio turbo, rover 200 turbo and such like untill i brought jap now i have my rev1 mr2 turbo and a ep82 starlet turbo and clio turbo still. but even this week i dropped off my car for a simple mot and they managed to knock my mirror off i dunno if its my luck or what they allways lower the car so the side skirts get caught or front bumper crash in to ramps etc.

for my rolling road tuning i use a local company who i can trust as he has been fixing cars and rally tuning for 40 years pity he is retiring very soon. half the time main dealers only focus on cars within the last 10 years or less.
all the best max

[paul t]

yeah paul i do just read things off the net thats why i cant belive you are running 87mm pistons is 14 years in a garage supposed to impress me. i have taken my cars to them as a last resort before and normally you get a half wit who ends up breaking it even further . mind you if a tyre fitter calls him self a mechanic now whats the world coming to. i have been fixing my own cars for the last 15 years and use the internet to fault find all the time now and its a god send. out of intreast what size is the rev1 2 thottle body? and the rev 3 one please?

I have been running 87mm pistons for years and not had a problem with them as i did not look on the net on how to fit them right,and i did not want to impress any one all i said is i have been in the trade for 14 year and i know what i am doing as i work on m3/m5 and evos day in and day out

[dai21t]

Lets see some 1/4 mile times then. Surely that'll prove how well built your car is. Anyone can talk up their car on here, only sure way to prove it is to post some verified times. (As he's done if you look at the 1/4 mile table).

Not quite 6mm difference, rev3 60.2mm rev1/2 54.5mm. hope that helps.

[cantfindausername]

The fact that an engine survives a few 1/4 mile run doesn't mean it's well built. To me a well built engine stands the test of time and repeat performs again and again.

But thats just my opinion.

[dai21t]

His engine has run a couple of years now, on the day he did a 12.1 1/4, he did 13 runs altogether. The car has never given any problems. Surely that means its built fairly well? Or maybe there's another definition of lasting well?

[paul t]

The fact that an engine survives a few 1/4 mile run doesn't mean it's well built. To me a well built engine stands the test of time and repeat performs again and again.

But thats just my opinion.

I use the car day in and day out and its done about 20k with this engine and all the ones i have done in work are still going strong so i must be doing something right .

[phil-p]

Cheers. i know runnin my car on 1.1 bar is a big improvement but how will the stock hg take it because this is my everyday car aswell as a toy so i use it all the time and give it stick so dont want it popping on me.

I dont want to do just the head but i cant afford everythin at once so doin things in stages.

Thats y u dont take ur car to dodgy backstreet garages unless u know them or a quick fit because ur goin to get monkeys working on ur car, thats y where i work for audi they charge £97.50 a hour plus vat. I am a mechanic myself and i would say a decent one but a canbus fault most people dont stand a chance with. I deal with this all day long. there is alot of conflicting infomation out there on the net and its not always best reading things off the net. thats y i ask questions on the net and see what people have to say and try and pick out the best bits from everyone opinions.

Cheers Phil

[turbomax]

i ran my car on 1.2bar for ages with standard rev2 gasket it was a big end bearing that went in the end on the track after pushing car for ages and countless hours of punishment over the time i have owned her. best qtr was 13 sec so far but after the rebuild hope to be in high 11 with out nos.

if those are the mesurements of the throttle body then i stand corrected
i will measure a rev 1 and 3 this weekend to double check.

again if you work on m3/m5 and evos then very good for you i dont envy you even less room in engine bay. if i had any of those cars i would take them to a main dealer unless they are old ones.

all the best max

[paul t]

if those are the mesurements of the throttle body then i stand corrected
i will measure a rev 1 and 3 this weekend to double check.

again if you work on m3/m5 and evos then very good for you i dont envy you even less room in engine bay. if i had any of those cars i would take them to a main dealer unless they are old ones.

all the best max[/quote]

I do work in a bmw main dealer and they have evo rally car thats how i work on them cars .Any way i can not be bothered to post any more about this any more .Have a nice day.

[turbomax]

i was just intreasted thats all as you said you work on m3s m5s and evos day in and day out so i thought you had a tuning shop. i would hope that bmws finest cars hardly went wrong and graced the workshop every day. let alone in house engine building. my mates m3 evo went back and forth so many times for vannos (dunno how to spell it) problems and clutch faults it was unreal. is that m3 evos? or mitsi evos? cheers max

[Jimbob]

I've got 100mm pistons and been working on cars for 16 years and I designed all the BMW's since 1981. And I have done 500 10sec passes.

Grow up!

[Jimbob]

Phil,

Not sure what your spec is mate but unless you are pushing over 500bhp a stock rev3 head is fine. Bigger gains can be made elsewhere for less money.

It order of to-do's in my opinion (on a Rev3)

IC
Exhaust + DP
Filter
Smal Turbo upgrade like Gt28rs or skip to next one
EMS
Turbo + Fuel

A well mapped Rev3 with stock internals and a few mods can make over 300WHP and plenty of torque.

[cantfindausername]

His engine has run a couple of years now, on the day he did a 12.1 1/4, he did 13 runs altogether. The car has never given any problems. Surely that means its built fairly well? Or maybe there's another definition of lasting well?

I use the car day in and day out and its done about 20k with this engine and all the ones i have done in work are still going strong so i must be doing something right.

Couldn't agree more. My post was more a question of "1 1/4 mile time is not = a good build.

At the end of the day though, they're only nuts and bolts and its hardly rocket science to put an engine. I've only ever built 1 engine, and that was my own. Designed the spec and took a chance on custom parts. So far its got 6000 miles on it. 3500 of that was done in a week in europe.

[phil-p]

Cheers. I have the rev2. Its already got the air filter and complete exhaust system on it. just wanted to know which is the better head the rev2 or 3? i have just took my car off the road, (a little early than hoped, just snapped a driveshaft lol) and i am hopeing to go for around 400 bhp.


If any one is selling a cheap car plz pm me

Cheers Phil

[darryl_p]

larger throttle body on the TVIS plenum chamber doesnt cause extra weakness on the #2 and #3

toyota with the ST185CS (RC / Grp.A) used a bigger throttle body, with the later ST185 getting it as well, guessing late rev 2 also had it....

[jimGTS]

larger throttle body on the TVIS plenum chamber doesnt cause extra weakness on the #2 and #3

toyota with the ST185CS (RC / Grp.A) used a bigger throttle body, with the later ST185 getting it as well, guessing late rev 2 also had it....

rev1 turbo mr2s has a small throttle "pipe" is as best i can describe it, cant remember the name....
but rev2 is larger....no bottle neck.