Interesting - I know the piston to bore measurement for a T500 cylinder is 0.06 - 0.07mm.
Anyone know what it is for the GT750?
X750h!
- garry55
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Re: X750h!
Garry.
Inside every standard Kettle is a bloody good engine crying for help...............
Inside every standard Kettle is a bloody good engine crying for help...............
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Re: X750h!
Suzuki manual says 0.0018 - 0.0022 inch, 0.045 - 0.055 mm, and so does the Haynes manual, what do you know, they agree on something
So a bit of a difference
So a bit of a difference
Last edited by 750ynot on Tue Dec 13, 2022 7:19 pm, edited 1 time in total.
Tony
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Re: X750h!
.045 - .055mm or 1.8 to 2.2 thou. Wear limit is 0.07mm or 1.8 thou.
edit; Looks like I'm late to the party again..
edit; Looks like I'm late to the party again..
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Re: X750h!
We are all trying to help this project on its way, and I for one love this type of thing, the collective will point out anything that needs pointing out, offering suggestions and info, superb!! or annoying depending how you look at things
Tony
- garry55
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Re: X750h!
Another T500 site I've checked quotes the piston to bore measurement as 0.065mm - 0.075mm. The gap (between the 2 bikes) is getting bigger
I have e-mailed Wiseco to see what their recommended measurements are for the T500 and GT750.
Await their response (if any)!
I have e-mailed Wiseco to see what their recommended measurements are for the T500 and GT750.
Await their response (if any)!
Garry.
Inside every standard Kettle is a bloody good engine crying for help...............
Inside every standard Kettle is a bloody good engine crying for help...............
- garry55
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Re: X750h!
Taken from Wiseco's web page:-
[url][https://powersports.wiseco.com/wiseco-p ... -titan/url]
Piston for 1972 - 1977 GT750 & T500 Titan.
Last oversize bore 72.00mm
Piston diameter 71.92mm.
0.08mm
Playing it safe? Or is the actual measurement half of the stated value, i.e. 0.04mm?
[url][https://powersports.wiseco.com/wiseco-p ... -titan/url]
Piston for 1972 - 1977 GT750 & T500 Titan.
Last oversize bore 72.00mm
Piston diameter 71.92mm.
0.08mm
Playing it safe? Or is the actual measurement half of the stated value, i.e. 0.04mm?
Garry.
Inside every standard Kettle is a bloody good engine crying for help...............
Inside every standard Kettle is a bloody good engine crying for help...............
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Re: X750h!
The piston size has nothing to do with the piston to bore clearance Gary, the piston bore clearance is set by whomever re-bores and hones the cylinders to suit the pistons supplied, it is vital to get right, I would be going with the 500 clearance, if you don't hear from Wiseco that is, or I am sure it will heat seize as soon as it starts to get hot, what do others think
Tony
- garry55
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Re: X750h!
Tony / Teazer - you are correct - thanks!
Had a chat with an engineering company who specialise in re bores and they confirmed what you have said - it needs boring to the T500 clearance.
Although their first question, after I mentioned that I was air-cooling a water-cooled motor was................ WHY?
Live and learn!
Had a chat with an engineering company who specialise in re bores and they confirmed what you have said - it needs boring to the T500 clearance.
Although their first question, after I mentioned that I was air-cooling a water-cooled motor was................ WHY?
Live and learn!
Garry.
Inside every standard Kettle is a bloody good engine crying for help...............
Inside every standard Kettle is a bloody good engine crying for help...............
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Re: X750h!
Well, that's one aspect of the build sorted, now for the other 99 issues to sort
We do these things not because they are easy, but because they are hard JFK, and we like a challenge.
We do these things not because they are easy, but because they are hard JFK, and we like a challenge.
Tony
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Re: X750h!
I remember Baz telling me that tolerances are less on a liquid cooled engine asgarry55 wrote: ↑Wed Dec 14, 2022 10:37 am Tony / Teazer - you are correct - thanks!
Had a chat with an engineering company who specialise in re bores and they confirmed what you have said - it needs boring to the T500 clearance.
Although their first question, after I mentioned that I was air-cooling a water-cooled motor was................ WHY?
Live and learn!
the temperature control is more consistent.