Discussion
As I am now completing the build of my new crossflow thoughts are turning to actually using it.
Up until now I have always treated new engines with kid gloves for 500 miles (3500rpm max)
then 1000rpm increments after that every 100 miles.
It has been suggetced to me that there is no need and just to drive it. I don't buy it but what do you guys think?
Up until now I have always treated new engines with kid gloves for 500 miles (3500rpm max)
then 1000rpm increments after that every 100 miles.
It has been suggetced to me that there is no need and just to drive it. I don't buy it but what do you guys think?
I'll be facing the same dilema soon..
This guy gives some good information :
General:
http://www.pumaracing.co.uk/
Running in:
http://www.pumaracing.co.uk/runin.htm
This guy gives some good information :
General:
http://www.pumaracing.co.uk/
Running in:
http://www.pumaracing.co.uk/runin.htm
Steve_D said:
If you need further input then I would say the Puma Racing piece is about spot on. Treating it gently is most definitely not the way to go.
Steve
You know when you meet a craftsman. A man who has converted his whole house into an engine workshop. A man who can smell how much to skim off a head. It's that guy. Took £300 off me he did, it was worht it just to see his place! Ummmm engines.Steve
This is how I'd do it, no pussyfooting around.
http://mototuneusa.com/break_in_secrets.htm
Well worth a read around that site. Scroll down the page and look at the piston gallery.
http://mototuneusa.com/break_in_secrets.htm
Well worth a read around that site. Scroll down the page and look at the piston gallery.
Edited by Boosted LS1 on Monday 23 June 22:41
Many years ago I worked for a BL Dealership. A local car hire firm always bought new Mini's and 1100's from us. These things were skelped to hell and back by the punters. Yet, they lasted for ages and generally performed better than the average customer car.
Summin to do with a "retained memory" in stressed items?
Summin to do with a "retained memory" in stressed items?
I rebuilt a 1700 puma engine for my kit car, new shells, rehoned bores etc. Drove it pretty carefully for the first 100 miles basically as it had no tax or plates and I didn't want to be stopped (and it scared me a little bit).
Took it to be set up at Dastek so naturally they are going to be taking it to redline for mapping and a few weeks later to Knockhill for a track day where the tell tale told me I had taken it to 6405rpm.
Now 600 miles later it is certainly starting to loosen up. But the way I look at it is if I pop the engine and if I can't rebuild it I stick a new engine in it.
On a different car I heard somewhere that Honda reported that Civic Type-R's that had be nailed from new had fewer engine problems than cars that had been nursed from new.
Engines are a lot better made nowadays than the crap produced in the 70's and most modern engines will see 200,000+ with regular services compared to a seventies A series which was ready to be turned into razor blades after 50,000 miles.
Took it to be set up at Dastek so naturally they are going to be taking it to redline for mapping and a few weeks later to Knockhill for a track day where the tell tale told me I had taken it to 6405rpm.
Now 600 miles later it is certainly starting to loosen up. But the way I look at it is if I pop the engine and if I can't rebuild it I stick a new engine in it.
On a different car I heard somewhere that Honda reported that Civic Type-R's that had be nailed from new had fewer engine problems than cars that had been nursed from new.
Engines are a lot better made nowadays than the crap produced in the 70's and most modern engines will see 200,000+ with regular services compared to a seventies A series which was ready to be turned into razor blades after 50,000 miles.
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