924Board.org

Winter fun, fixing nagging things that is really annoying.

There is an exhaust drone around 3000 rpm. Trying to fix that with a better quality rear muffler, also bigger. Its not a loud exhaust othe ...

I bought a 931 8 years ago, it ran fine apparently at least.

It needed some, quite a lot, of restoration. I'm now trying to move it to another garage on by its own power.
I tried getting it sta ...

Perfect for FIA historic racers, otherwise you could probably get a lighter than stock stroker crank for the same money.

I replaced the broken spring in mine and that made a world of difference.

Interesting. I saw the spring priced at some honestly weird prices for a spring, but certainly cheaper than replacing both ...

I replaced the broken spring in mine and that made a world of difference.

Rarely even get over 10psi boost!

You know, turning up the boost makes more power.

I turn down the boost in my car in the summer...but turn it back up when the cold weather arrives. 14p ...

vapor blasting (glass beads in water) gets aluminum really really nice. clean and sort of polished. Done it to parts on my BMW K100.

It doesn't embed the blasting media in the material, BUT, it get ...

You're right, the wires themself have a resistance. Fixed some wiring, replaced the coil and it started, sort of... it runs very badly on 2 or 3 cylinders.

12 volt directly to the coil is about dou ...

I'm resurrecting my partially restored 931, 1979. Its a car that was running 8 years ago when I parked it, but I didn't drive it much, just a few miles.

After deleting an old alarm system I keep f ...

1.5 mm is fine. probably 2 also.

Don't get the non interference thing.... 90%of all engines are interference.

There is only one cure, training, building stronger muscles around the knee.
Pain in the knee will "spread" to the hip and back, and the other way around too, because you move funny.
Actu ...

I might take 2 sets...

I'm looking to get some better springs that can rev to 7500+ with boost. But I think that the stock springs might actually be good for that already. But it depends on the cam too.

What other compon ...

I'm looking to get some better springs that can rev to 7500+ with boost. But I think that the stock springs might actually be good for that already. But it depends on the cam too.

What other compon ...

A tangent to valve springs, if anyone know.
Why do we have a rotator (name??) under the exhaust valves?
Is it really needed and why?
I haven't seen that in other engines and they are NLA too.