Garage19

Onlt thing that made me nervous was the lack of cage and the inertia reel seat belt.

Once out on track i realised after the first three corners that you didn't drive like a reckless twat with no skill and was more than happy to be sat in the passenger seat.

Still think you should get at least a half cage in there having seen the results of a 70 mph roll on a road car i was driving only a few laps earlier.

Thanks for the ride.

Chip

iTrader: (3)

I remember his loopy mini's from many years ago, he's been a petrol head for as long as I can remember

rapidcossie

I "think" that they think it will give less power, more back pressure and the same response compared to the turbo on my car.

rapidcossie

It wasnt actually the head gasket that was failing Tony but the head bolts streatching then the block cracking.

Symptoms were the same a duff gasket tho.

Turbosystems

iTrader: (5)

what head clamping system did you use

rapidcossie

It was just a group A gasket with a wire rung block and six Mountune studs.

Its completely different now tho.

Martin-Hadland

iTrader: (2)

FFS

rapidcossie

I cant quote them Martin as Alan hasnt specifically said to me what he thinks.

I learned long ago not to do this as Chip will jump right down my throat

Mike Rainbird

iTrader: (3)

What Alan has actually said is that comparing the compressor maps, the T4 wins hands down.....

rapidcossie

Seeing as he is one of the only ones to have a T4 map it makes it hard for others to compare

Martin-Hadland

iTrader: (2)

Compressor maps are good as a guide for turbo selection but until it gets bolted to an engine you won't get the whole picture.

Jay,

iTrader: (4)

my thoughts to whats good on paper aint the be and end all

Mike Rainbird

iTrader: (3)

From what I understand, Alan has experience of both turbos in the real world....

He only sites the fact that you just have to look at the compressor maps and then you can actually see why the T4 is so good....

Martin-Hadland

iTrader: (2)

Ok, I have just spoke with someone of high repute who has tested the GT3076 .63 back to back with the roller bearing T4..

GT30: Comes on boost much sooner but can't make as much boost as a T4 at 7500+ rpm.

The compressor wheel is 3mm smaller at the inducer end and the same at the other. The exhaust wheel is smaller on both counts but is a higher flow design.

Mike Rainbird

iTrader: (3)

Which is basically what I have said all along .

However, I would like the person (as he has done back to back tests ) to define "much" in regard to "much sooner" and "can't make as much boost", as that just seems wishy-washy to me .

Martin-Hadland

iTrader: (2)

I know the exact figures but rather than you pick holes in them I am keeping it vague. Boost for boost the fuel maps didn't need any adjustment.. So I'm still saying that the GT30 is the better turbo unless you really need that extra 20hp at the top, the reward will be a much nicer car to drive.

Anyhow the GT32 is the next thing...

Chip

iTrader: (3)

Is that a GT35 front on a GT30 back end.

AKA the "surgemaster pro"

Martin-Hadland

iTrader: (2)

Nope, nothing like!

Mike Rainbird

iTrader: (3)

The exact figures would make any further discussion null and void and would answer everyone's questions, so you're a party pooper for not posting it .

Also, was it the roller-bearing T4 with the "AVA" modifications (I would love to show you these, so you could see how different it is, but I promised Alan I wouldn't)?

Martin-Hadland

iTrader: (2)

I know exactly what the mods are and I'm not sure if it's well known or not but a certain well know touring car team did the same thing all those years ago.

Mike Rainbird

iTrader: (3)

So was it one of these that was tested?

Martin-Hadland

iTrader: (2)

Ha ha... No!

RWD_cossie_wil

iTrader: (9)

Just for a change, it has all gone secret squirrell again .. Every time a turbo question comes up this happens

CossieRich

iTrader: (1)

so if these mods were done by a touring car team years ago, there is no harm in telling us what the mods are Martin

Stavros

Mike, why you defending RS500 T4s for? Your car clearly doesnt run anything close! Its a hybrid T3/4 using the same basic housings as the 500 one, and therefore potentially could well be better than a GT30 as the wheels etc can be hand picked to suit the application.

Cant be compared to the standard RS500 T4 OR a GT30 which is designed to suit all manor of applications, rather than being tailor made like the thing your on about.

Its like Triggers broom, same one for 20 years, just its had 17 new heads and 14 new handles

Martin-Hadland

iTrader: (2)

Why is Mike defending T4's? Check his website for prices

RS2.7

Best to use 2 small turbos instead

philram

iTrader: (3)

i'm guessing it was rouse with the modded turbos. i remember he got protested after another team sore his getting reconned and they were different. he won the appeal after he said it was repaired damage..

cossiemanden

Ehh i just did and i found one that is more expensive than a complet gt30 setup, ext wg and boost controler......


(p.s. no offence mike, always great service AND prices i´v had from you)

Stavros

eh? i dont think ive seen on any engine barring maybe V ones where 2 turbos are better.

Mike Rainbird

iTrader: (3)

Er, excuse me, but please find where I mention "RS500" T4s . I am defending the latest roller-bearing T4 against the externally gated GT30....

Mike Rainbird

iTrader: (3)

I seem to remember something you quoted at me the other day - ah yes, apples and oranges .

westus1

iTrader: (6)

i'm sure it was ava that did a twin turbo set up on a cossie years ago but nothing ever came of it so it must have been crap

glancy2081

a thought it bent the crank did it not

Mike Rainbird

iTrader: (3)

That was a compound turbo, I believe he is referring to Alan's Sierra Estate which is / was twin turbo .

RS2.7

You use 2 small turbos feeding 2 cylinders each until a set boost pressure is reached where a valve opens and all 4 cylinders are fed by both turbos . You get instant throttle response and huge top end power as the 2 turbos move more air than 1 big one . Turbotechnics built such a set up years ago but it was very expensive and no-one had the cash !

Turbosystems

iTrader: (5)

you might want to check the info above to put it bluntly thats bollox lol

Stavros

Right-o mate, that makes SO much sense

BTW, was sarcasm, you clearly dont even understand what your typing

pani_k

iTrader: (1)

I can see the logic in that but have no fucking idea how you could get that to work or implement it.

RS2.7

Pretty simple really but costly to make the manifold hence they only made a few kits . I think they called it a "K" gate system and it had an actuator with a valve that combined the 2 turbos to all four cylinders for top end power . Very very effective though , will piss all over a big single turbo car on a track /street /strip /everywhere really .