I have just been to my mechanic to get the verdict on my 3TGTE engine. The fault was found to be a broken ring land on no. 4 cylinder.(no surprise)
What I want to know is why no. 4 pison seems to be the first to go?
The rest of the engine is in good shape, the spec of the rebuild at this stage includes:
Ross 20 thou oversize forged pistons
porting of the cylinder head (standard valves)
ARP rod bolts and head studs
Custom T3 turbo on modified ported stock manifold
Custom inlet manifold using XF 65mm TB
RX7 S5 550cc intectors
The block, crankshaft and Rods seem to be strong in these engines. There are a few areas I am unsure about thought:
1) SUMP: is there a need for high volume sump?
2) Fuel Rail: any benefit to a custom rail?
3) Inlet manifold volume: I intend to keep the stock bottom half and construct a new top section with forward facing TB. By my calculations about 3.6 litres of voulume sounds right. Any thoughts?