Search found 9 matches

by Tom Willis
Tue Aug 12, 2008 12:24 pm
Forum: Engine & Transmission Shop
Topic: rear bevel tube weeping oil
Replies: 5
Views: 2868

I replaced my tube orings twice before I examined the grooves. The casting in the back of the groove was pitted (probably that way since new). I cleaned the areas and added high temp silicone to the pitted areas only, installed the new oring and no more seeping. Apparently the oil was migrating arou...
by Tom Willis
Mon Oct 29, 2007 7:38 am
Forum: Bevel Drive Twins
Topic: SOLD 74 750 GT
Replies: 0
Views: 1771

SOLD 74 750 GT

1974 750 GT $8500 SOLD I purchased this bike in 2001 from a friend who wanted it to have a good home. It has never had the seal broken on the bottom end and mechanically it needed new spark plug threads so I had the heads done and put it back together with new gaskets. In 2002 after a 1000miles and ...
by Tom Willis
Fri Sep 14, 2007 6:03 am
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: New plugs every 800 miles
Replies: 7
Views: 4016

Thanks for the input, very interesting! I had to convert my charging system to a Detronics because I (self inflicted) shorted my stock voltage regulator while cleaning terminals several years ago. Recently my battery needed replaced so I put the 2 year old Oddessy battery from the Guzzi in until I g...
by Tom Willis
Thu Sep 13, 2007 5:49 am
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: New plugs every 800 miles
Replies: 7
Views: 4016

125# rear, 127# front. Don't know how to do a leak down test. I have valve guide seals in the top end gasket set I bought from you. Can they be put in without pulling the heads? I think if the plugs were wet looking when I pulled them and it was just fuel wet they would dry out. These still look wet...
by Tom Willis
Tue Sep 11, 2007 1:36 pm
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: New plugs every 800 miles
Replies: 7
Views: 4016

I will let you know what I come up with...my problem is I don't stop riding it long enough to fix it!
by Tom Willis
Tue Sep 11, 2007 11:14 am
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: New plugs every 800 miles
Replies: 7
Views: 4016

Steve, The main jets were already drilled but I was trying to establish whether I was close or not. The Haynes manual says 118 front and 112 rear so after measuring I think I am "in the county" as far as sizes go. I am sure a new atomizer, needle and main jet would help but I am not convinced it is ...
by Tom Willis
Mon Sep 10, 2007 1:41 pm
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: New plugs every 800 miles
Replies: 7
Views: 4016

New plugs every 800 miles

Could use some help with this one. 74 750 GT restored 4 years ago & 14,000 miles. Electronic ignition, new needles when carbs rebuilt, stock coils and new (then) :? non resistor wires. Always starts 2nd kick with full choke when cold and runs great until plugs need changed. Plugs have some carbon bu...
by Tom Willis
Tue Feb 21, 2006 8:30 pm
Forum: Engine & Transmission Shop
Topic: The dreaded oil Question!!!
Replies: 53
Views: 46655

oil question

I have also been using Castrol 20w50 for the last 30 years. I still use it on everything except my 74 750 GT. I've been using Aeroshell 100 (50w) for the last 12,000 miles. It may crater tomorrow but so far so good. I do not do much cold weather riding (less than 60 degrees) as we don't have much wi...
by Tom Willis
Fri Jan 06, 2006 12:31 pm
Forum: Engine & Transmission Shop
Topic: 74 750 GT Kickstarter Shaft Seal renewal
Replies: 2
Views: 4704

74 750 GT Kickstarter Shaft Seal renewal

First, order a 20mm x 26mm x 4mm oil seal (Chicago Rawhide 7854) from Pervis Bearing. I think the seal was $4.00 and the shipping was $6.00. Still, cheaper than you could order it from Ducati if they even had one! Then buy a small package of 4x3/8 flat Phillips head screws from Lowes. You will proba...

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