what power on a nearly standard spec turbo lump
Turbo Mini Forums

basically im rebuilding my standard engine

im going to have :
std engine with slights mods
phase 2 cam
t3 turbo
fmic and dumpvalve
getting cr down to 8:1 ish so wanting to be running 18 psi
4pin diff
sc drop gear


sorry for the boring spec but kinda tightish budget thanks charlie over 120 bhp would be nice?

at 18psi i would say you will get more than 120bhp

if you want 120ish i would say run 10-12psi.

With a good! Intercooler with those pistons if the bores are ok? And a standard head 135 to 140ish BHP

Is not out of the question

Enough to destroy your standard gearbox.

In the 13's at last!.. Just

Wonder what I have got wrong then. TurboPhil head dished turbo pistons 8.2:1 CR,MG N/A cam,GT1752, offset rocker bushes, Megajolt, intercooler and 15 psi only got me 137bhp.

Depends on a few factors? If set up correctley etc... And one brings to mind the rolling road...... some are way low!

And others you could place a dolls pram on there and get 3 BHP.......lol

Turn the boost up. Mine is gutless on 15psi and that's on 8.6:1. 20psi cures the problem.

Out of interest what max ignition adv are you using at 15psi?

In the 13's at last!.. Just

intercooler makes a big difference. (cheap and good quality)

mine was front mounted (actually on the front of the car) and it was a good quality one. would have been £300ish new.

most common mods done to it, with 14psi approx 180bhp. this was running MJ with a very well tuned needle/carb

see my avatar. can see the IC :)

thanks guys the bores are in good condition and hopefully new totalseal rings, im gonna be using good size intercooler, will 18 psi destroy the gearbox even with a 4 pin diff and sc drop gears ???

You will have no trouble. With the standard gearbox if you are using SC drops, make sure! You renew the 1st motion shaft bearing.

Hope this helps you, ...... keep us updated

ok thanks much appriciated Benross

once managed to get piston rings will be going together fairly quickly