RS Motorsport :: Classic Speed Restored

In my experience from actually driving my car with a knock sensor that I know was working properly. You won't hear @#$% with all the noise of a race car and helmet on with someone talking in your ear.
The danger zone is through the mid range under load. And to be honest 38 is a lot of timing. Every engine is different but a good race engine with well done chambers shouldn't need anything near that. Out of interest my engine actually made the most power on 30 and anymore just cost power

If you can get it on the dyno. It is worth it!

How did you run the followers in and how long has the engine been running so far?

Followers or 12 minutes @ 2000rpm (some say they need running in some say not).

Total run time 79km + idling in shed. 1-2 hrs. Drove around the hills using 1 gear higher than I would normally to load the engine a little more.

If you ran the thing at idle for 10-15 mins plus what ever you could have glazed the bores already as that as old wives tale and if the engine made any power there's no way to put enough load on it to bed the rings properly on the street as it'll just wheel spin

OK. That isn't what the engine builder told me though.

Too late which ever way it is......... :(

Has a dyno session next week just to double check the advance and fuelling.

We fire them up just long enough to make sure it runs and then then it's on the dyno with as much load as possible and within your 10 minutes or so the rings have sealed!

OK. I will try that approach on engine #4!!!!!

When Mike Dale ran in my new engine on the dyno it was really obvious that the rings were bedding in. Engine was breathing quite heavily into the catch can for 5-10 minutes as he held the revs around 4-5000rpm with heaps of resistance on the rollers, the engine sounded like it was really struggling and I thought something was going horribly wrong.

I have nothing to add other than say I hate being there during Dyno sessions. Listening to the poor engine from the unnatural position of in front of it as the operator does what they do...just don't like it!

JP