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SP/AP46 Pistons with WD45 Crank

Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Pulling Forum
Forum Description: Forum dedicated to Tractor and Garden Pulling
Printed Date: 25 Oct 2021 at 6:53pm
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Topic: SP/AP46 Pistons with WD45 Crank
Posted By: PA185
Subject: SP/AP46 Pistons with WD45 Crank
Date Posted: 04 Mar 2021 at 8:52am
Question about the AP/SP46 M&W, WD45 crank combo.
For the 13:1 compression set up will the factory felpro head gasket hold?
Or do you have to run a copper head gasket with an o ringed head?
Looking for input from people who have ran the set up or are familiar with it.

Posted By: DrAllis
Date Posted: 04 Mar 2021 at 10:08am
I always used a stock OEM head gasket from the old days. Now, todays head gasket isn't the laminated metal one from yesteryear, but I still think you'll be OK. Do a cold retorque after you've run it a couple of times down the track. Ignition timing will need to be retarded somewhat with the higher compression.

Posted By: steve fischer
Date Posted: 09 Mar 2021 at 7:50am
I have run stock gaskets also have some extra ap46 and ap48 pistons

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