must have roller bearing and cut back blades and be capable of approx 400bhp what do you guys suggest

 

to be fair im saying must have roller bearing cus of what ive heard but like i know

 

Universal Turbo's MD-240

 

Gt28 iirc. Mike will tell u. what that mooonstone 3dr that Harvey built has on it, supposed to be

 

was thinking gt30

 

gt28 wont flow 400 horses, not even the disco potato one (gt28rs)

why does it have to have cut back blades?

 

GT2871R 53.85mm 71mm 400 HP

thats what i just cut and paste from a garret dealer so dunno as for cut back blades aint that just an upgrade from standard ? im new to all this detail

 

GT28RS 53.85mm 60mm 350 HP

take it you thought this was the biggest running horse gt28 then chip ?

 

People tend to call the gt2871 a gt2871 so thats what i thought you meant not a gt28, bit like poeple dont say a t3 when they mean a t38, cause its actually a different turbo.

 

oh right like i said im new to the details i was just going by what i was told on here recently that all these gt30 and gt28 followed by other numbers where different examples of 30 and 28

 

or if u want to go for the tried and tested method a good all fashiond T34

 

I got a GT28, which made 400bhp. Fookin lovely conversion

Heres the graph and figures......





Ian.

 

Well i suppose technically thats true, in the same way that a T34 is just a different example of a T3 to some people i guess.


Ian, fantastic curve, what spec motor was that?

That really is awesome for a 400bhp motor.

 

Chip, here is the engine spec.......

ENGINE

200 COSWORTH BLOCK
STANDARD STEEL CRANK, STANDARD STEEL CON RODS
GENUINE COSWORTH PISTONS
LOW COMPRESSION (7.6:1)
HIGH PRESSURE OIL PUMP
BIG WINGED SUMP (1 litre extra)
WRC METAL 4 LAYER HEAD GASKET
LONG STUDDED
4X4 POLISHED & PORTED HEAD
HARVEY GIBBS CAMS
KENT ADJUSTABLE VERNIERS
PORTED INLET MANIFOLD AND PLENUM
INLET MANIFOLD ‘O’ RINGED
4X4 EXHAUST MANIFOLD
GT28 ROLLER BEARING TURBO WITH MODIFIED T34 FRONT HOUSING
GARRETT –31 ACTUATOR
GROUP A CAM BELT
GROUP A COIL
GENUINE RS500 INTERCOOLER WITH MODIFIED T34 FITTINGS
PACE RS500 FAST ROAD RADIATOR (50mm core)
PRO-ALLOY SLIMLINE UPRATED COOLING FANS
PACE TURBO COOLER
BAILEY MOTORSPORT TURBO OIL FEED & PRE FILTER
SPEC-R GROUP A BREATHER/SEPARATOR SYSTEM
SPEC-R CAMBELT COVER
SPEC-R SWIRL POT
SPEC-R WATER COOLED POWER STEERING TANK
SPEC-R HEADER TANK (with sight glass)
SPEC-R WASHER BOTTLE
STANT 21-25psi RADIATOR CAP WITH LEVER RELEASE
SAMCO BOOST & WATER HOSES
BRAIDED FUEL HOSE -6 WITH EARLS FITTINGS AND CLAMPS
(from filter to fuel rail, and regultor to tank)
MIKALOR STAINLESS STEEL HOSE CLAMPS THROUGHOUT
2 AIR SCOOPES ABOVE INTERCOOLER WITH DUCTING TO AIR FILTER
MONGOOSE 3in STAINLESS STEEL EXHAUST (with Powerflex hangers)
K&N GROUP A CONE FILTER
WEBBER MARELLI LEVEL 8 ECU WITH PECTEL BABY BOARD
PECTEL 12 POSITION BOOST CONTROL (in car)
4 X 403 GREY INJECTORS (503cc)
WRC AIR INJECTORS WITH –4 BRAIDED HOSE AND EARLS FITTINGS

 

Ian. yours yours done by Harvey Gibbs?? because I think your is the car I was referring to...........I know its not moonstone, bad memory

 

Ian, fantastic spec, and it certainly works extremely well judging by that graph, and i bet (not shown on the graph of course) that as well as a slightly better spread of rpm being on boost that the lag when you nail it at say 4krpm from a slight thorttle is also less than a standard T34?

I really wish id gone down that route with mine rather than buy the T34 now to be honest.

I assume that the t34 mods to the GT28 are largely responsible for it flowing more than one would expect?

Who did the work?
Or is it DIY?

 

There was a Gtir running a GT28RS and it made 431bhp at 1.3bar

 

Have a look at the compressor map for that turbo and you will find that either thats a very optimistic rolling road, or a modified turbo or something.

Or failing that its just got a fantastic engine attached to it, after all my mates BBC makes 550bhp N/A off a carb, but your YB never will, lol

"Safe" on the boost map for a GT28RS is about 350bhp

 

Chip, All the work was done by Harvey at SCS The original spec I went for was a T34 with a genuine .55 housing, as I didnt want much if any lag, but the spec changed come dyno day when Harvey unexpectedly bolted the GT28 on, and when I saw the figures it stayed

On the road, if you nail it from 2500rpm its INSTANT boost, and since it has been live mapped, it peaks at around 2.2 bar, backing of to around 1.8/1.9 to 6000rpm, then tails off.

Here is a pic on the dyno and in the car.......

 

WERY NICE FIGURES there ian

I would go for an gt-30 witch is also aa little more laggy then the gt28( not much tho) but is has the possibillity to go a little further in the future when you want a little more power

But either way, go for the gt28 or gt30....

 

cheers for your help guys im sorted now

 

What did you go for then?

 

I'm loving my MD240R even though i can't tell you a lot about it!
It spools up quicker than any T34 i have ever had and makes the engine pull like a train

 

Fook everything else Ian i reckon the 2 items above made all the difference

 

Fook off with you Carlos Fandango wheels!