Non high compression pistons for 750GT

If you need technical information or help with your roundcase Ducati 750 engine - post your FAQs, comments & questions here.
Post Reply
User avatar
rightsideup
Cucciolo - the Lil Pup
Posts: 14
Joined: Sun Oct 31, 2010 12:54 pm
Location: Devon, UK, Europe

Non high compression pistons for 750GT

Post by rightsideup » Mon Sep 16, 2019 9:11 am

My GT is on the first oversize at the moment, compression readings seem low to me - 110psi rear and 100ish on the front. Should I be thinking of new pistons and the next oversize and if so, what recommendations for a 'normal' piston
'74 Ducati 750GT | '78 MZ TS250/1
In the high latitudes of Finland, in the parching heat of Africa, under the most different operating conditions these motor-cycles run to the satisfaction of their owners.

User avatar
geodoc
750 GT
Posts: 178
Joined: Thu Jul 18, 2013 3:57 pm

Re: Non high compression pistons for 750GT

Post by geodoc » Mon Sep 16, 2019 10:14 am

Probably want to do a differential compression test first to determine valve as well as rings seal. Might save you a mort of work & $.

G





.

User avatar
BevHevSteve
SITE OWNER
SITE OWNER
Posts: 2184
Joined: Wed Mar 10, 2004 8:53 pm
Location: Lafayette, California
Contact:

Re: Non high compression pistons for 750GT

Post by BevHevSteve » Mon Sep 16, 2019 11:33 am

AKA a leakdown test.....
Image
Steve Allen (925)798-BEVL[2385] Ride'm, Don't Hide'm
Ducati/Euro Spares -> https://Store.BevelHeaven.com
Facebook > http://facebook.com/Bevel.Heaven
Twitter > http://www.Twitter.com/BevelHeaven

User avatar
rightsideup
Cucciolo - the Lil Pup
Posts: 14
Joined: Sun Oct 31, 2010 12:54 pm
Location: Devon, UK, Europe

Re: Non high compression pistons for 750GT

Post by rightsideup » Mon Sep 16, 2019 2:11 pm

Leakdown it is - thanks comrades!
'74 Ducati 750GT | '78 MZ TS250/1
In the high latitudes of Finland, in the parching heat of Africa, under the most different operating conditions these motor-cycles run to the satisfaction of their owners.

Post Reply

Return to “Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport”