73 sr engine parts interchange ability

I

IowaSledKid

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Joined
Feb 18, 2010
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iowa
Wondering what will fit and what wont. I know theexciter bottom end is very close bout would like to have a correct case for it.


Is there anything similar to the 73 sr cases? Perhaps the 73 gp or somethjng.

I noticed they all have different part numbers but im not sure whats different.

Also if anyone has a 73 sr 433 crank case they sell let me know. Id like to have a few spare parts around for this sled.


Last bit of info. Its a 73 433 sr full mod oval sled rc cylinders and correct heads. built by drp. Made the front row ar er this year.
 
Hmm, I used to have a sr. I do know we put sr jugs on a 75 gpx, so they are interchangeable, don't know if the gpx case will fit in the sr though. seems like I had those engine parts lying around somewhere ... Ill have to look for em!
 
mitch

the sr bottom end is too itself but a gpx 433 bottom end will work just fine ....congrats on the WC at ER... that is pretty much it for the motor either sr or gpx
 
so it was just as I thought. gpx crank will not fit in a exciter or sr but exciter and sr are the same. outside appearance of the cases is different but bolt pattern and cranks will interchange. er broke my crank and ended up putting a exciter crank in it.
 
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