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Search found 4 matches
- Mon Nov 11, 2024 9:24 am
- Forum: Ultralight Engine Talk
- Topic: 4 Stroke engine woes
- Replies: 27
- Views: 45070
Re: 4 Stroke engine woes
Given there was virtually nothing left of my motor I started by pushing the Easy Button and went with a 420 Predator from Harbor Freight as the base. I went with the 420 because the aftermarket product/support and knowledge base with the Predator is huge. It is pretty much the go-to for a lot of go ...
- Wed Nov 06, 2024 9:48 am
- Forum: Ultralight Engine Talk
- Topic: 4 Stroke engine woes
- Replies: 27
- Views: 45070
Re: 4 Stroke engine woes
My 460 had issues right from the beginning. The rocker shaft had no thread lock on it and came loose in the air. I got down safely. Timing was off resulting in huge kickback and difficulty starting. Retarding a few degrees helped the matter. Excessive crank case pressure filled the 12+ oz catch can ...
- Tue May 07, 2024 10:09 am
- Forum: Ultralight Engine Talk
- Topic: Carb, Smart Carb 2, and EFI discussion
- Replies: 25
- Views: 50754
Re: Carb, Smart Carb 2, and EFI discussion
They are now using an ek27 on the 303 and an ek26 on the 250.
- Mon May 06, 2024 8:54 pm
- Forum: Ultralight Engine Talk
- Topic: Carb, Smart Carb 2, and EFI discussion
- Replies: 25
- Views: 50754
Re: Carb, Smart Carb 2, and EFI discussion
I put a SC 28 on my Polini 250 a couple of years ago and to my knowledge was the first to do so. Out of the box it was horrible and I figured I wasted a lot of money. It ran lean at the bottom end/fat on top, rpm fluctuated and throttle response was poor and no matter what metering rod was in there ...