woodenshoes wrote:
WOW!!! Thanks for all of that info, you should re-write the 240 model FAQ's section on Swedishbricks. This gets me thinking that if he lists the car as having 205K miles and it is an american car it would have the B23F?
I didn't actually read the ad. Does he say that it's an American car or from Halifax? I'm confused. If it's a US car it'll have the first year of the B23F, which is similar to our B23E except that it's got the first generation of EFI, while ours was K-jet. We also got the A cam and I'm thinking they got the M cam that the other B23Fs got.
Quote:
From your compression testing results are you saying that his 200 PSI on a 205K mi/330K km engine is reasonable? That is you said it should be higher but your engine has 200K, and bear with me here, the lower CR and more aggressive cam (The T is more aggressive, right?) develops more pressure than the factory B23E?
I'm saying that 200 psi is reasonable, yes. He's got more compression than me, but I've got a smaller cam which will drive up the compression pressure some. The T is less aggressive than the A, so it closes the intake valve earlier and allows the piston to build more cranking pressure.
122_Canuck wrote:
193 PSI even sounds like that engines in pretty good good conditon. Where's the 10% coming from (even that sounds fine)? Either way - the B23E is a pretty good engine - in naturally aspirated form it is no tire shredding monster but if the original poster is getting 200 psi even it should perform pretty well.
My engine's basically brand new. Richard Thomas built the bottom end and ran it on his shop's engine dyno for maybe 20-25 hours. I built the head with some oversize stainless valves and some swish valve guides, and lots of porting. It should be in good shape, since I've only put a few tanks of gas through it since I got it from him. It's all coming from the rings, which is pretty normal. The 10% is only valid when testing with this gauge, as I'm not sure there's a standard calibration system for leakdown testers, and if there is I doubt this one observed it. 10% is at the junction between the "set" and "low" ranges on the gauge, so according to the gauge manufacturer, the engine's pretty healthy.
The '83 B23E is totally different from yours. 108 horsepower versus your 136, or whatever the numbers are, and a much lower powerband. Things that can be fixed, of course, but for this much money I'd agree with Athal that the only thing making it worth the $2,200 is a pristine body. Bring a magnet!