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by parrisjr
Thu Nov 17, 2022 3:43 am
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: Pistal Forged Piston Clearance
Replies: 3
Views: 7546

Re: Pistal Forged Piston Clearance

Standard pistons in a street bike.

I found some information that stated a clearance of 0.06 mm or 0.0023”. Just not sure this is correct.
by parrisjr
Wed Oct 19, 2022 12:12 pm
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: Pistal Forged Piston Clearance
Replies: 3
Views: 7546

Pistal Forged Piston Clearance

Looking for information on what the clearances (minimum and maximum) should be for piston to cylinder bore for newly fitted Pistal forged pistons on a 1972 750 GT
by parrisjr
Tue Oct 18, 2022 5:17 pm
Forum: Engine & Transmission Shop
Topic: More valve seal confusion . 1972 750GT
Replies: 2
Views: 16258

Re: More valve seal confusion . 1972 750GT

I ran into the same issue when rebuilding the heads on my 1972 750 GT. Below is the reply I got from Harne at back to Classics in the Netherlands.

These valve guides are original! But only used on the very first 750's so you must have a 1972 engine. The valve stem seals for these are much different ...

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