dfx, on May 22 2008, 08:15 PM, said:
With your knowledge est how much boost can this block withstand since its bored/enlarged from a stock M15/16 block
Unlike factory finish M18 since it had thicker side wall
Can i safely say this block is better remain as NA (high compression) rather then force induct it?
As far as I know, the M15A or M16A can not be bore to 63mm, cuz the sleeve OD is very close to 86 mm. I asked TSD for the exact tech info, the block is modified then fitted with a new designed sleeve with bore 86mm and sleeve OD still bigger, that leaves plenty of wall strength.
The head gasket also a newly designed for the 86mm bore to assure best seal and withstand high pressure.
That's why we don't see a 86mm bore from M15/16 block as the block needs to be modified.
This TSD Sam Sport block 1.8L/1.9L will be stronger than M18A block. Turbo charge? you figure it out

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