Running In Engines

[chassis 33]

Often a controversial topic...what's the best way to run in your newly rebuilt engine? Are you a softly softly person or a WOT screamer person?

...and why?

Regards
Iain

[chassis 33]

I like what I'm hearing seeing as im interested in RV8's that will make it 20-30mins of aural pleasure. Does a rolling road session count as varied throttle runs?

After that I plan some shake down runs on an airstrip, geometry check/corner weight session, then a Wednesday morning at Mallory...and try to remember to turn right at Gerrards this time.

Regards
Iain

[chassis 33]

WHAT!!! A PH topic that I've been involved in that hasn't descended into a bun fight. Must be something to do with the new year, don't worry folks, normal service will be resumed soon, I'll just throw in an erroneous comment and then try and defend it for a while.
...do you all the know the urban myth about running in F1 engines by running them without oil for 30seconds?

By the way, what oil would you use? Again I'll probably run with the advice of my engine builder however, I'm thinking...

- Halfords 20w50 "Not for use in post 1980 vehicles" for the initial 20-30mins run in
- A fairly decent possibly semi 20w50 for the next hour or so
- Silkolene Pro Race dogs bollox stuff that opieman (and others) recommend for the remainder of its life.

Regards
Iain

[chassis 33]

Right so the general consensus is give the bugger a hard time to allow the rings and cam to bed in properly and use cheap oil, but dont be a really numpty and end up cooking the crank by using freshly reclaimed chip shop coking oil and having to go back to square one.
Cheers folks, I'll look forward to that in a few weeks time!

Regards
Iain

[chassis 33]

That's got me wondering, should I put the engine on a dyno to run it in, instead of sat in the car, because from the 20/30 mins run there wont really be much more running until im doing shake down runs on an airfield, rolling road session or testing.

Should I get it run for a couple of hours at varying speeds on a dyno? This doesnt sound a cheap option though.

...or maybe I should just be grateful for what I have and leave that to be that.

Regards
Iain

[chassis 33]

It's going in a race car, I'll let my results do the talking.

Anyway, we're all running DL1 loggers to measure power and I'll getting a MA road session done too

Regards
Iain