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No there not. The PJS is a lot bigger. I found one with reeds. Thsnk you though

I don't want a 750, just want to build a 650.

I was wondering if you can put the 650sx domes in the 750sx ADA shell? I know the bores are different. But does 650sx dome have more meat to fit in the 750sx shell?

I know this has been asked before but I can't find any info. Can you put the 650sx ADA domes in the 750sx head shell? Just wasn't sure if the 650sx will have more meat on the outer edges to fit the larger shell or if the shell is the same for each.

I know this is a very long shot. I was wondering if anyone happen to have or know of any 650sx Girdle heads or kits, and a 650sx stroker crank? I sold my Bad Bones girdle head a while back and now I'm kicking myself!! I know there out there but who knows where?? Also No I Don't Want a 750sx...

Gotcha, had a brain fart there!! Lol!!

Yes, they were called a cheater because you couldn't see the difference between the two not because of of the limited class. It was only a saying, ya know like a sleeper??

I've got a stock 650sx head that's matched to my cylinders when I had the engine setup. It's only at 160+/-, but I want at least 180/190lbs not 220? Lol!!

No I haven't. This is a good gauge, it's the same one I use on my SBC engines.

Yep it's the same head. I like it but I wasn't sure what domes it could take? I'll look into the WC dome. I've never heard of a WPP?

I'm looking for a set of 650sx cheater head domes in the 30cc to 32cc range. I have 28cc's and my compression is at 220lbs! A tad bit higher than I want to run. I don't really want to send these 28's in to be cut! Thanks

Howdy, I'm looking for anyone that might have a set of 650sx cheater head domes in the 30cc to 32cc range? I just put a reconed cheater head on my 650sx with 28cc domes and my compression is at 220lbs! A tad bit higher than I want to run. Its a rec ported 550sx 650sx swap with 750sx pump...