Search found 3 matches
- Mon May 16, 2011 9:13 am
- Forum: Questions & Discussions about Diablos
- Topic: Fuel/oil mix
- Replies: 7
- Views: 5012
Re: Fuel/oil mix
I have dicussed this on this site befor, and here is my 2 cents... the stock hirth piston on the 300 has 3 rings. If you run a mix too lean, say 50:1, its possible that the middle ring may not get enough oil, and as the engine gets hot, you could lose power. This happened on my buddy"s 300 in a 67 p...
- Thu Mar 25, 2010 12:21 pm
- Forum: General Discussion
- Topic: 634 piston works in a Hirth 300!!!!
- Replies: 1
- Views: 1660
Re: 634 piston works in a Hirth 300!!!!
Well its official! My 300 runs perfect. Started for the first time today and let it idle for an hour. THE 634 PISTON GAVE NO TROUBLE.
- Wed Mar 10, 2010 3:18 pm
- Forum: General Discussion
- Topic: 634 piston works in a Hirth 300!!!!
- Replies: 1
- Views: 1660
634 piston works in a Hirth 300!!!!
As a kid, I was completely HOOKED on old sleds. I had the intertec manual memorized by the time I was 12. Anyway, I looked through the bore & strokes of all those engines and found that the 300 and 600 had the same pistons. They also show a 317 that shared pistons with the 634 twin. These engines ha...