F40 LM Restoration

There should be no doubt you've made the right choice regarding the paint touch up and locale to exercise this beautiful beast of a machine Tim. Well well done and very happy for you!

 

Wow, so cool your car comes close. I hope you don't mind at some point I will contact for an opportunity to watch, just watch Not sure though if Ascari has a spectator area...

 

Great pics Tim, thanks for sharing man.

 

Excellent news! Ascari is a great place to test your beauty.

 

Talk about doing things properly. F40 LM at Ascari. And it seems like you can take a partner and keep them entertained while you are on the track.

 

I would drive it there first, then see if the gearing you have now gets you between 7000 and 7500 at the end of a straight. It's super annoying to hit a limiter just before you hit the brakes for a corner, and not sure it's very healthy for an engine to bounce off the limiter, even if it's at a lower RPM than its safe limit.

 

I wonder how different (if anything) it'll sound.

 

Normal F40 is 7800 isn't it? I assume it's a fully forged engine, so 7500 should be fine...you're not spending the whole weekend on the limiter I suspect. Technology and materials have improved over the last 20 years.

It's a small V8, 7500 won't hurt it.

 

I think the bible (BIGTURBO.co.uk - ECU Tuning) is the source of the above, but I think the boost doesn't fall to zero under full throttle as you approach the 7800rpm cut-off in the standard car - I have just about managed to keep my nerve on a track to check this out. It is possible that the above is true, but there is latency in the system with wastegates, amal valves etc that leaves the boost on even as you hit the rev limit - I am not sure.

Normal F40 boost curve looks quite different to what I have seen on an F40GTE (which is close to the LM I suspect). The rev limit is set lower than the 7.8k for the standard car.

Given you are running much higher boost levels (2.6 bar for standard LM vs 1.1) it may be worth having a lower rev limit in the interest of longevity.

Given you have a programmable motec, may be worth setting checking if the rev limit can be set as a function of boost level (say 7k for level 3 and 7.5 for level 1).

Just some thoughts - I am not an expert.

 

It's a work of art. Shame it has to be used!

 

Well..i would say the exhaust. The car has to be driven!!

You have to keep it alive Tim!

 

Tim, thanks for sharing. Some wonderful cars for sure!

 

I got my books and I have to say, they are very well done. The overall quality is great and I'm happy to have them. They do a wonderful job of covering this restoration.

Thank you Tim for going though the effort to get these books done. I know it hasn't been easy!

 

Stunning