port shape

[m671054]

Check out the exh port shape on these. Think rings last long. http://pages.ebay.com/motors/link/?nav=item.view&id=251554752561&alt=web

[Coupelx]

i dont think it would have made it past first start. i have a pair i used to practice on that you could actually see where the ring bounced when the exhaust port closed. it left 'ripples' in the cylinder wall.

[Larry's Shee]

How the fuck would you get them that square in the corner? Flat file?

 

Has good time/area values                    

[camatv]

if its same % as stock, and looks like it,  plus generous chamfer. the rings probably lasted just fine.  still a really shit port shape.   more than enough there to fix it 

[Bennett131]

someone placed a bid to find out lol

[tfaith08]

Square ports will always flow more lol

 

Wouldn't be a bad setup for getting someone used to porting.  It would also be a good idea to get them to see exactly how thick the walls are so that you know how far you can take the port walls out. 

 

I might get them so that I can throw them on an engine for a guy that really pisses me off.

[tfaith08]

Also, that's the way to use vernier calipers for anyone that was wondering.

 

Take a close look at the exhaust por tin the 3rd picture.  It looks like a widened and reduced radius port there, just with a square chamfer.  Also, check out the front left main transfer on the right cylinder.  Looks like he did a good job on the sleeve there as well.

[Surfrjag]

they do look like they can be fixed... hard to tell with those awesome pics and accurate measuring. hha

[shanYE west]

I almost put a bid in.. But I just wanted the Pro-Design studs.. Them fuckers are 40.00 a set!