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Author Topic: 750 pistons in a 550: What to do for gaskets?  (Read 1120 times)

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AaronJ

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750 pistons in a 550: What to do for gaskets?
« on: March 05, 2009, 10:57:00 AM »
Hey all! I am planning on doing 750 pistons in my 550, and I was curious as to what I need to do as far as a head and base gaskets with the new 61mm bore? Also, does anyone have a link to what needs to be done as far as modding the 750 pistons to fit the 550?  Thanks in advance!

-Aaron
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Online Jerry Rxman Griffin aka MuthaF'er

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Re: 750 pistons in a 550: What to do for gaskets?
« Reply #1 on: March 05, 2009, 11:30:51 AM »
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Offline Spikeybike

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Re: 750 pistons in a 550: What to do for gaskets?
« Reply #2 on: March 05, 2009, 11:41:51 AM »
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AaronJ

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Re: 750 pistons in a 550: What to do for gaskets?
« Reply #3 on: March 05, 2009, 04:27:37 PM »
spikey, thats the link i was looking for, thank you very much!  And excuse my ignorance...but was that cometic link a reference to getting custom gaskets made? because they don't even have any applications for a 550
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Offline Soos

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Re: 750 pistons in a 550: What to do for gaskets?
« Reply #4 on: March 06, 2009, 09:37:38 AM »
A cb650 head gasket.


Easily accommodates 61mm, And from what I have asked in the past the 650 and 550 head gaskets can be exchanged... But I have not done this myself so ask before doing would be prudent IMO....



I know the cb650 stock head gasket works with cb750 pistons, 'cause I am running '77 cb750 pistons in my cb650 with a stock(aftermarket) head gasket.



l8r


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Offline moham

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Re: 750 pistons in a 550: What to do for gaskets?
« Reply #5 on: March 06, 2009, 09:52:22 AM »
Quote from: AaronJ on March 05, 2009, 04:27:37 PM
spikey, thats the link i was looking for, thank you very much!  And excuse my ignorance...but was that cometic link a reference to getting custom gaskets made? because they don't even have any applications for a 550

Call cometic. They have part numbers for what you need. I just bought one for my 60mm 550 overbore project. They just need a couple days lead time.

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Offline bwaller

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Re: 750 pistons in a 550: What to do for gaskets?
« Reply #6 on: March 06, 2009, 06:13:32 PM »
Cometic part # H0516SP2059F works for a 61mm bore.
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