GT750 barrels

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garry55
Posts: 143
Joined: Fri Dec 27, 2013 2:49 pm
Location: White Rose County

GT750 barrels

Postby garry55 » Sat May 20, 2017 9:13 pm

can later (L/M/A/B) barrels be used on J /K crankcases?

Ta

Garry.
Garry.

Inside every standard Kettle is a bloody good engine crying for help............... :D

Kettletimes3
Posts: 1399
Joined: Thu May 03, 2012 12:58 am
Location: Sunny Wales

Re: GT750 barrels

Postby Kettletimes3 » Sat May 20, 2017 10:31 pm

yes.All barrels fit all crankcases just different port timing.

teazer
Posts: 420
Joined: Mon Mar 07, 2011 8:10 pm
Location: Chicago

Re: GT750 barrels

Postby teazer » Sun May 21, 2017 1:51 am

Good thing about early crankcases is the number block which looks like a TR750. The bad thing is the lack of an O ring below the bypass tube which can allow water to enter the transmission.

Very early cases use taper fit SRIS valves which must be drilled out and tapped or blocked with Devcon or similar.

As teh prior poster mentioned, all barrels can be used on all bottom end cases

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garry55
Posts: 143
Joined: Fri Dec 27, 2013 2:49 pm
Location: White Rose County

Re: GT750 barrels

Postby garry55 » Sun May 21, 2017 10:55 am

Thanks guys !

So - if I wanted to fit early barrels to later cases, I would only have to remove the dowels on the outer barrel studs?
Garry.

Inside every standard Kettle is a bloody good engine crying for help............... :D

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oldjapanesebikes
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Location: Alberta, Canada
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Re: GT750 barrels

Postby oldjapanesebikes » Sun May 21, 2017 3:37 pm

garry55 wrote:So - if I wanted to fit early barrels to later cases, I would only have to remove the dowels on the outer barrel studs?

No - you can use the later dowelled studs with the early style barrels - in fact I normally convert early cases over to use the stepped studs as a matter of course as I usually also use the later crankshafts, new style con rods and new style pistons in the early cases. 8-)
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Ian


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