rsnissan

iTrader: (9)

What is the best Spec to go for using a GT30 on a relatively standard engine, 205 block?

I love the power delivery of my 803's/0.48 set up at present but want more power.

Am I right in thinking that fitting lower comp 4x4 pistons and a bit of head work with some bigger injectors will do the trick? what sort of power can I expect on this setup and can you recommend doing anything else at the same time double valve springs etc etc


Cheers

SapphyMike

T34.63.

Stavros

Its 2007 not 1997

And anyhow, he likes how the .48 is, the .63 isnt like that.

I love how .48 ones drive, not sure about GT30s, but bet they good.

What power you actually want mate?

SapphyMike

damn, i knew i should've bought a new calender.

but, why complicate things?

rsnissan

iTrader: (9)

Id rather bypass the whole T34 thing now and go to the "next level"

I would like as close to 400 ATW as possible really but after more input I may have to settle for less not sure really but thats why i posted this thread

anymore for anymore???

Chip

iTrader: (3)

for 20bhp more and a load of extra lag?


Hardly what he is asking for!

Chip

iTrader: (3)

If you keep the boost moderate, I dont see why you need to lower the CR.

Head work seems to be essential though on these asthmatic old engines!

SapphyMike

not always the case.

ok, how about a UT T38?

Chip

iTrader: (3)

Thats far laggier again.

He wants a GT30 for fucks sake, let him have one

Its advice on everything EXCEPT the turbo that he wants, lol

Rippers

Has anyone done a High Comp GT30? was considering that myself but means a complete rebuild with longer rods etc

Chip

iTrader: (3)

Most people seem to go lowered comp.

Personally I would go standard comp and risk having to sacrafice a little midrange, but ive never actually tried it.

SapphyMike

if he wants a GT30, then why is he asking about it here?

surely he should be asking his tuner about it

Chip

iTrader: (3)

He fucking well isnt, he's asking about the rest

He builds his own engines.

Mike Rainbird

iTrader: (3)

I wouldn't run high compression on a car that is going to be regularly maxed out or see track days UNLESS you have the budget to run suitable fuel at these events.

Lee has just switched to a GT30 (this is the set up he ran at Coombe over the weekend), why not ask him how it drives .

Staffi

iTrader: (1)

That's the turbo i have and i'm changing to a GT30...

Not the most responsive turbo to be fair, makes decent power, mine made 442bhp/355 torque, but not much happens below 4k (ON MINE ANYWAY)

SapphyMike

but then your engine spec is wrong for that turbo isnt it?

tbh, if i could find one, a good old TO4B was a good turbo..

Staffi

iTrader: (1)

[quote="SapphyMike"]

but then your engine spec is wrong for that turbo isnt it?





It did have a T4 originally but Jim swapped it fir the 38, as for wrong spec engine, the cams in the car are NMS ground from blanks and are tailored for quite high revs..

Porkie

iTrader: (1)

ITS A FUCKING MONSTER!!!!!!!!!!!!!!!

Ask Doug Stirling... he is feeling his Reyland 2.0 GT30 as well

MENTAL MENTAL MENTAL powerband!!!!

Doug of course means Autobahns in Germany.... not UK motorways

Staffi

iTrader: (1)

You like it then Lee??

kjc300

iTrader: (1)

I really can't wait to get mine mapped properly!! Got a few bits and bobs to finish on it shouldn't be long now!!

Porkie

iTrader: (1)

What Gearbox solider boy? wanna buy my Fixit. One lady owner. never raced or rallied in bulgaria

SapphyMike

GT30's do indeed rock.

Staffi

iTrader: (1)

Who's mapping yours??

Chip

iTrader: (3)

FPMSL

kjc300

iTrader: (1)

Standard


Pm me a price Lee!!


P.s. whats a "solider" ?

marco polo

iTrader: (1)

hi mate

i have the a gt30 with a .63 internal wastegate and im well happy with it

it makes postive boost from 2k but doesn't start to kick in properly untill 3.3k

when i say postive that means 0.1+ 1.1+ 1.3 ect at 2k then rises


for road i love it too bits because i have the low down responce for normal driving

i think my engine compression is either 7:2:1 or 7:5:1 im not really sure as Steve Scott built it , all i said was copy the Harvy engine so i haven't got a clue im not sure if the head is ported or not
i know the Harvy head and inlet was ported i know this isn't the same head as the harvy head was fooked , so i dont know but anyway im well happy the way this gt30 pulls

My internal wastegate will not make as much power as an external wastegate GT30 version who cares about an extra 50bhp i dont.

All i wanted was a "plug and play" turbo that made a bit more power than the t34 without much lag and this was the best option for me

i couldn't be botherd with the screamer pipe and modding the exhaust housing to make fit the external version no only noise is a big issue on tracks no so it wasn't the best option

i haven't got a clue what version my GT30 so dont ask i told Martin to order me one so he knows what version i have

this turbo still will not come in any quicker than your turbo on .48 housing no way not even a t34 .63 will either

it does come on boost hard about 3.2k all i am saying it makes somekind of postive boost at 2.k because of the roller bearing

thats all i can say

i am still on the t34 chip injectors 3bar ect untill the car comes out of the ford shop then its going to karls to map/fit 1000cc injectors /5bar map/ eccv plelume with spacer /air to air with 12 postion boost controller

Im not chasing figures so i dont really cars what power it makes but if it makes a genuine 420+bhp it will be half a quick car !!!


marco

kjc300

iTrader: (1)

Karl hopefully, need to speak to him about it soon!!

Mark Shead

Yes it can be done easly.

Mark

Chip

iTrader: (3)

Would I be right in thinking that with something like SM4, you could still get away with lots of boost in the midrange, then link EGT's to extra fuelling so that if it was held open for ages like Mike is talking about it simply got richer and a little less powerful to stay safe but was full power in short bursts when EGT's dont get out of hand?

Mark Shead

Why just loads of boost in the mid range you dont see my engines running less at the top,
Biuld a Cossie right map it right and then fit it correctly and there is no problems.

Mark

Chip

iTrader: (3)

Mark, you misunderstood me, apologies.

At high rpm you wont get EGT problems from lots of boost, so its not a problem to run loads of boost up there, so I was taking for granted that would be no problem, so it was only the midrange that I was referring to as somewhere that would have dangerously high EGT's if the car is held there due to the amount of retard needed.

Mark Shead

Chip even in the midrange there is no high EGT problems.

Mark

Chip

iTrader: (3)

If you up the CR far enough there will be, at that point could you use the SM4 to dial extra fuel in based on EGT's to control it?

Mark Shead

Chip So far there has been no need for any need to control EGT.

Mark

Chip

iTrader: (3)

This is like pulling fucking teeth

Im saying if you do get to the situation with "an engine" and "a turbo" and "some boost" that mike describes where you end up with EGT's going up, is that something the SM4 could take care of via introducing more fuel based on a response to EGT (or for that matter can it do it by some other method) in real time so that as the temps rise it simply safens up the map to make sure they dont get dangerously high at any point?

Mike Rainbird

iTrader: (3)

Mark,
Obviously it depends on what you are calling high compression....

Mark Shead

I call high comp above 8-1 and below 15-1 .

Mark

Franco

iTrader: (2)

I cant wait for my Reyland GT30 enigine either now!

Thinking now though that I should of plumped for solid lifters..........

Franco

Red16

What you classing as high comp Mike?

everytime i see a cossie spec its always got low comp, between 6.8 and 7.*:1 whereas the jap lads all seem to run around 8.5:1 generally.

What difference does it make if theyre both ran on say Shell V-Power? How come it works on Evo's etc but not on cossies, even though they both run decent boost levels?

I understand the theory behind detonation but the 8.5:1 compression doesnt seem to cause any problems over on the darkside, but scares the shit out of the ford boys

Mark Shead

It dont scare me but remember I am also on the darkside

Mark