Search found 10 matches

by Wbxnewby
13 Aug 2024, 15:42
Forum: Mechanical
Topic: Vacuum Advance Unit, are these interchangeable?
Replies: 8
Views: 1712

Re: Vacuum Advance Unit, are these interchangeable?

Hi, I have same issue. DG engine. After full rebuild timed ignition and found vacuum advance broken. I bought a cheap one and the engine is now very down on low rpm torque. I feel it is advancing too much. Before the rebuild it had more torque but was set more advanced than it should have been at ti...
by Wbxnewby
19 Jun 2024, 07:28
Forum: Mechanical
Topic: Weber carb jets
Replies: 8
Views: 1324

Re: Weber carb jets

As it was running fairly well with the right jets in the right holes I decided to check ignition timing. I found the vacuum retard diaphragm was broken so have replaced that. Timed it to the Haynes manual with vacuum pipe disconnected at 900rpm. With vacuum pipe reconnected it now affects the timing...
by Wbxnewby
04 Jun 2024, 21:07
Forum: Mechanical
Topic: Weber carb jets
Replies: 8
Views: 1324

Re: Weber carb jets

Sorry.. that’s what I meant by a plug chop.. pre color tune.. you can probably buy a good electronic analysis tool nowdays
by Wbxnewby
04 Jun 2024, 15:00
Forum: Mechanical
Topic: Weber carb jets
Replies: 8
Views: 1324

Re: Weber carb jets

Thanks for reply. I have looked up an image of that carb and it’s not a 34 dat. I will at some stage try and find out what it is! In the meantime I have swapped jets a couple of times and decided it runs much better one way round and plug chops are generally good colour so sorted for now. I also fou...
by Wbxnewby
31 May 2024, 20:57
Forum: Mechanical
Topic: Weber carb jets
Replies: 8
Views: 1324

Re: Weber carb jets

As an idea would I be right in thinking that the larger jet with the biggest hole would go with the larger choke diameter?
by Wbxnewby
31 May 2024, 20:06
Forum: Mechanical
Topic: Weber carb jets
Replies: 8
Views: 1324

Weber carb jets

Just rebuilt my t25. I left the carb untouched and in start up it was very erratic. I have a twin choke Weber on it and found the main jet was blocked. (Very) stupidly have mixed up the main jets for the first choke and the second choke. They are different bore sizes and have different drillings. (T...
by Wbxnewby
31 May 2024, 19:55
Forum: Mechanical
Topic: Dowel on flywheel dg engine
Replies: 8
Views: 1117

Re: Dowel on flywheel dg engine

Flywheel rotated by 1/5 rotation. All working fine and starter engaging every time. Thanks for advise
by Wbxnewby
02 May 2024, 17:30
Forum: Mechanical
Topic: Dowel on flywheel dg engine
Replies: 8
Views: 1117

Re: Dowel on flywheel dg engine

Is it worth drilling a hole for the dowel in the flywheel or just removing dowel from crankshaft I wonder. I guess if it pulls out easily…still getting over 2 broken head studs and crankcase welding on eroded water jacket.. so trying to save the environment and the cash..
by Wbxnewby
02 May 2024, 05:41
Forum: Mechanical
Topic: Dowel on flywheel dg engine
Replies: 8
Views: 1117

Re: Dowel on flywheel dg engine

Useful info thanks. I will reuse the flywheel now I can rotate it 1/5 .
by Wbxnewby
29 Apr 2024, 18:31
Forum: Mechanical
Topic: Dowel on flywheel dg engine
Replies: 8
Views: 1117

Dowel on flywheel dg engine

I want to rotate my flywheel by a fifth of a rotation as the ring gear is worn in the normal crank stopping places. It has a dowel in the crank so I would drill another hole in the next quadrant of the flywheel holes. Is there any reason the crank has a dowel and any reason I can’t rotate by a fifth...