A brief guide to the first stages of Silvia S12 Engine modification

[323ian]

Is there a fuel pump available of another car which can be used instead of a wahlbro? ie a skyline one or something?

[s13eater]

ive heard of people using a 300zx pump, it should do the job as they are 280bhp as std and i bet you can tune them a bit before you have to change the pump.

[323ian]

you know if thats a direct fit mate?

[s13eater]

no mate ,but nothing is ever very hard,

[WM-S12]

I've got


Air filter with cold air feed
NOLOGY Silver spark plugs
97+ RON fuel ( unless the garage is outta the juice I gota use 95 )
3.5in custom back box
custom turbo back straight through setup
Magnicor Performance HT leads
10w 50 Castrol GTX Hi-Mileage
Nipparts oil filter

so I'm only really missing the intercooler, fuel pump, boost controller and decent boost gauge. All relatively cheap to get hold of just theres no dyno's in this secluded part of scotland. It's tempting just I don't know what more horse-power will do to the already knackered engine ( compression and oil in 3rd cylinder ) might end up going something like this. VROOOOM!....BANG! BANG! BANG! JUDDER, SCREECH, HISS! KAPUT!!!! then complete silence as the engine dies...... no idea really just a thought

[ChEsTeR]

My engine recently said "INAF!". A head gasket was blown and when i realised what happend the water was boiling in the engine. Turns out that one piston "nr. 4" got so big from the heat and srached the cylinder surface very very vaery vaery badly. the only option is oversized pistons.
My question is haw much i can expect from this engine to withstand with forged CP pistons and OEM DET rods????

[s13eater]

probley more than you will see from the engine due to the flow of the head.so about 32psi is what i ran it on for a few 1 mile bursts, and from 23 to 26psi on std setting all on the t34, that was with det rods and je pistons.