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Author Topic: Need rings/Anyone used TRW 811cc kit?  (Read 1568 times)

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Offline 68grandprix

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Need rings/Anyone used TRW 811cc kit?
« on: July 28, 2006, 12:58:46 AM »
I just picked up an NOS TRW piston kit # L 2424F off Ebay. The pistons are 3mm over, forged, 10.5:1  for a Cb750.  I need rings, and Hastings said they had some rings that would work, but I was wondering if anyone knew of rings in the sizes that I need in a set I can just buy. Hastings emailed me this long list of things that worked out to about $100. I need 1.5mm compression rings and 2.8mm oil rings. Also, has anyone had any experience with this kit? The pistons look pretty nice to me, but maybe someone can tell me a little more about them. Thanks, Jimmy.
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Offline MRieck

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Re: Need rings/Anyone used TRW 811cc kit?
« Reply #1 on: July 28, 2006, 05:16:05 AM »
Total Seal also can supply rings.
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Need rings/Anyone used TRW 811cc kit?
« Reply #2 on: July 28, 2006, 10:30:21 AM »
I run a Yoshi 810/811/812 kit. When I took mine apart I sent a piston to Hastings to ID rings. Really nice folks! They ID'd it as using 68-72 (not sure of last year) CB350 rings and sent my piston back at No Charge and just told me to go to the dealer. I don't know that yours would be the same rings as mine but I wouldn't hesitate to go with Hastings.
Jerry
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline 68grandprix

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Re: Need rings/Anyone used TRW 811cc kit?
« Reply #3 on: July 29, 2006, 01:59:17 AM »
How do you like your piston kit? Was there a pretty good power increase (if you ever rode the bike stock) ? Thanks, Jimmy
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gizmo

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Re: Need rings/Anyone used TRW 811cc kit?
« Reply #4 on: July 29, 2006, 07:58:43 AM »
hi anyone know where i can get an 836 yoshi ring set for a cb750 k6 i might get round to posting a couple of pics as long as you all don't mind a modified singl cam i know its sacralidge but if you saw the bike when i did you'd understand the decision
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Need rings/Anyone used TRW 811cc kit?
« Reply #5 on: July 29, 2006, 10:37:11 PM »
Quote from: 68grandprix on July 29, 2006, 01:59:17 AM
How do you like your piston kit? Was there a pretty good power increase (if you ever rode the bike stock) ? Thanks, Jimmy

My bike was stock when I blew it up back in 1976. It was really tuned in sweet. So well that I was blowing the carbon out to run a 900 Kaw heads up with much confidence. Missed 2nd gear and the rest was history. When I installed the 810 I also went with a Yoshi Daytona (race) cam and S & W high performance valve springs hoping that I wouldn't blow it up again. The 810 kit really helped my bottom end. Much less down shifting around town due to increased torque & HP. I attribute the top end increase more to the cam.
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline paulages

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Re: Need rings/Anyone used TRW 811cc kit?
« Reply #6 on: May 10, 2007, 12:45:45 PM »
hey-- i'm installing the same pistons, but can't find clearance specs. do you know what bore you went with?
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paul
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1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R
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