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Posted: 14 Nov 2006 02:28 am
by foggyjames
There really isn't a shortcut, to be honest. If you try to bodge it, it'll bite you on the arse sooner or later. The yanks do +Ts, but they have drop-in turbo ECUs for the NA cars....which we don't have (except on LH2.4 cars).
cheers
James
Posted: 17 Nov 2006 12:01 pm
by ch
how much is the compression( dont know if its the right word) in B19A? as I know a turbo engine should have a lower compression then a stock engine.
Posted: 17 Nov 2006 01:12 pm
by foggyjames
10:1? If you tune it right and run low boost pressure, compression is not a problem. You'll make more power per PSI with higher compression. Several guys in the US are running 15psi on 10.5:1 B21 engines.
cheers
James
Posted: 17 Nov 2006 04:53 pm
by Fuse
B19A doesn't have 10 compression, B200K does.
B19A has 8.5 compression ratio, so it is suitable for turbo use as it is.
For example most R-Sport kits didn't include pistons as it was meant to use with B19A, which already has low compression stock. Only later R-Sport kits meant for B230K included pistons also, which lowered compression ratio.
Posted: 17 Nov 2006 06:22 pm
by foggyjames
That low? Crikey! That's horribly low for NA.
cheers
James
Posted: 17 Nov 2006 06:27 pm
by Fuse
foggyjames wrote:That low? Crikey! That's horribly low for NA.
cheers
James
Yeah stock B19A isn't an engine for people who are in hurry..
Can you imagine that we got the same engine option in 240 also.
Not the fastest vehicle on the road.
Though it's a perfect base for sticking in a turbo if you don't need more displacement. Thick cylinder walls, strong rods and compression is good for turbo.
Posted: 17 Nov 2006 06:30 pm
by foggyjames
B230A 240 is no rocket ship, so the B19A one...
cheers
James
Posted: 17 Nov 2006 09:34 pm
by jtbo
Fuse wrote:foggyjames wrote:That low? Crikey! That's horribly low for NA.
cheers
James
Yeah stock B19A isn't an engine for people who are in hurry..
Can you imagine that we got the same engine option in 240 also.
Not the fastest vehicle on the road.
Though it's a perfect base for sticking in a turbo if you don't need more displacement. Thick cylinder walls, strong rods and compression is good for turbo.
Yes it is indeed and it is not so crucial to get ignition precisely right as there is little more safe marginal with normal boost (under 1bar) than high compression ratio engines like B200.