Tom M'Guinn

What is the best thing to use to clean freshly machined parts, such as the crank, block, etc. They are clean of course, but I want to make sure all the machine residue and grit is gone. WD-40?

FlyingDog

Acetone is good, xylene is better. WD-40 will just leave more residue.

Crazy Eddie

"Acetone is good, xylene is better"
I have a gallon of Xylene if you want it Tom
Regards
Ed

Ski

Xylene - when finished cleaning, throw the rest of the 117 octane in the tank

Sam Lin

Warm soapy water.

Sam

mark944turbo

I would have everything internal brought to a machine shop and jet washed. Then coat w wd40 and keep in plastic bags until assembly.

ehall

"Xylene - when finished cleaning, throw the rest of the 117 octane in the tank "
ski

Where do you buy Xylene? TIA

Ski

any paint store, just get it in 5 gallons, much cheaper.

special tool

yup - that is the only octane boost I used on my last dyno run........

tconn

What is the proper xylene/gas ratio ?
Is A/F adjustment needed running this mix?

special tool

The specific gravity is higher - so you may be richer, slightly. I have never made any afr adjustments with it up to 40%.
The energy and flame speed are very high, yet the 944 stock ignition system does not have a problem lighting it at above normal cylinder pressures...

fast951

I'm no chemist, but from what I gather, 20% mix is the most you want to use..

Crazy Eddie

If you cant find it at the paint store they carry it at Home Depot 10 bucks a gallon
regards
Ed
btw I found gasoline to be a great cleaner ... Just dont get it near a flame
Also a **** load cheaper