Trist

2.0l YB 4x4 sapphire
6 long stud block
ported and polished head
BD14 inlet cam std exhaust although he is in talks with someone about a one off profiled cam design?
pocketed pistons
swedish inlet
GT3076 HTA with 44mm tial external wastegate
ARP Rod bolts
lightened flywheel
hydraulic clutch
oppliger big tooth straight cut gearbox?

LHD220Turbo

iTrader: (4)

550 is about the limit

Trist

whats stopping more? bottem end?

JonnyBravo

Turbo isn't good for that much more I didn't think ?

JamesH

iTrader: (21)

I'd say leave the exhaust cam and get a slightly bigger inlet cam. Power etc depends on boost?

t16coupe

id say about 520 without pushing everything to the limit

LHD220Turbo

iTrader: (4)

the turbo mate

Big Will_

A GT3076HTA will break the 600bhp barrier (just) if the rest of the engine is efficient enough.

J1mbo

iTrader: (1)

What is the difference in the hat to a straight forward gt3076 allowing it to make much more power?

Big Will_

From memory, the compressor wheel is a billet item which moves around 57lb of air at the top as opposed to the 52lb of a standard item.

The nut on the end of the shaft in front of the compressor wheel is modified into a 'bullet' shape, helping the flow into the extended tip of the wheel.

The bearing core is a motorsport metal caged item too on all the 30HTAs.

Gary at APT has had some really good results with them on 2.0 evo engines, here's a graph he sent me a while ago:



And guess what boost it did it at? (Power at the wheels in this one!)

cossie4i+

iTrader: (15)

Thats mega power for the boost

Steve

JonnyBravo

Great results there

Trist

He had 2 bd14s and lacked torque and was bloody laggy on monster T4. Changed to standard exhaust cam and made 40lb ft more. Finished on old spec at 545bhp 500lbft torque

Trist

So is going to see (maybe) an extra 40-50bhp lol what a waste of £7k