supercharge K24/k20a2?

[freddy914]

i was thinking of supercharging my k24a1 with 11:5:1 comp.pistons and k20a2 head with stage 2 cams.. would the jrsc race kit be to much boost or should i stick with street kit..

[MugenReplica]

Higher compression pistons and boost has never proven to be a great combination. Typically, you will want to run LOWER compression pistons with boost. Differences in piston compression account for maybe 10% at the most of the useable power. With such a high compression, you will have a hard time tuning out knock as well as wearing out rings and valve seals quickly.

Look into the piston makers and see the compressions on their boost-specific products. You will find 8-10.5:1 range. N/A pistons are like 11-12:1.

Because the engine is boosted, a higher compression is no longer necessary as the forced air provides more than enough positive pressure for kick-ass combustion.

Quoted for JimmyJames...

[freddy914]

Quoted for JimmyJames...

thanx for the info.

[jimmyjames]

To add, what you're proposing is called a "poor man's TSX"
You can find an overview of the whole process here;
http://www.sportcompactcarweb.com/tech/0406scc_shortblock_vtech_cylinder_head/index.html

In that article, they wisely stayed with the stock 9.6:1 pistons.

[si4life]

Great info on that link. Thanks!



To add, what you're proposing is called a "poor man's TSX"
You can find an overview of the whole process here;
http://www.sportcompactcarweb.com/tech/0406scc_shortblock_vtech_cylinder_head/index.html

In that article, they wisely stayed with the stock 9.6:1 pistons.