BRAMMER

iTrader: (23)

Currently running a fresh standard rebuilt 205 block grp A headgasket, 803, MSD CHIP, T34 .48 and the other usual bits.

The simple question is, i've been told i could run light blues and .55 - i'm about to replace the turbo so i could change all this at the same time then back for boost/fuel change, is it safe enough for this level of set-up on a standard compression engine??

pa_sjo

Everyone will have a differing opinion on this; ultimately on standard cams and compression ratio, you're going to hit det before the limit of the spec you detail on pump fuel (with running a safe amount of ignition).

allsteel

Your chip will be suited specifically to the set up you have.If you change housings and injectors you would need a different chip or a remap.205 block would take that power level though,there are plenty running well with more power than that.

cossie604

iTrader: (2)

As above really, its basicaly an unknown area. Some people have successfully run over 500bhp..others have gone pop at 350bhp. How much of those failures are based on poor attention to detail on the build up is unknown ie cleaned out head bolt holes etc. Im still running my cossie's original numbers matching block, on a T4. Its all irrelivent tho when you've got a big batch of 200 blocks spitting their dummies out as well

cossie4i+

iTrader: (15)

I run a T34.55 on my 205 block which also has a ported head and 400s.

Been ok so far at just over 370bhp, but thats at just 1.6 bar peak. Will be upping the boost soon with a new map.

Steve.

bigchez

I'm running a t34.63 with 32 psi peak and a pretty well worked head on standard comp and cams on a rebuilt 205 blocked bottom end.

Karl @ NMS estimated power around 380-400 (it goes on rollers next sat) and touch wood no problems yet.

I won't go any higher than this on the 205 though.

the saint

iTrader: (1)

im still on my original engine in my sapph and its done 137k and now runs a t4 and grey ect and i intend to rebuild it soon and want 450bhp and as said above building it properly and having a good spec i cant see the 205 block having problems staying in one piece.