running in after re-build

[tamore]

i didn't get much of a chance to ask questions when i picked my car up as i did it from the security guard after hours. so i thought i'd tap into the trusty pistonheads knowledge bank.

i've just got my car back (at last) having had a full rebuild. i know i can't exceed 3500 revs for the first 1000 miles, and certainly not for the first 500. after i get it back from the 1000 mile check and oil change, will i be able to thrash the conkers off it straight after, or gradually build up revs over the next 1000 miles or so?

[icraigmy]

I have just run my rebuilt engine in.

Don't exceed 3500rpm until the 1000 mile service.
Don't let the engine Labour in a high gear going up hills etc.
Warm the engine up carefully - important.
Check oil after 500 miles.

After the 1000 mile service, beware some components can take up to 3000 miles to fully embed in, so up the revs in stages, 3500-3600 rpm upto 2000 miles then gradually up to 4000 rpm until you reach 3000 miles. Now that the car has done 3500 miles since the rebuild I'm reving it over 4000 rpm.

[tamore]

where did you get this recommendation from? i have spoken to the place which did mine, and it's.. um....... slightly different advice.

[XTR2Turbo]

Just do the same as the factory recommend in the manual for running in a new car.

David

[Daftlad]

tamore said:

i didn't get much of a chance to ask questions when i picked my car up as i did it from the security guard after hours. so i thought i'd tap into the trusty pistonheads knowledge bank.

i've just got my car back (at last) having had a full rebuild. i know i can't exceed 3500 revs for the first 1000 miles, and certainly not for the first 500. after i get it back from the 1000 mile check and oil change, will i be able to thrash the conkers off it straight after, or gradually build up revs over the next 1000 miles or so?

Take care for the first few 100 miles. 3500 sounds too much, but for intermittant blasts when warm its probably fine. Don't let the engine labour and don't use full throttle until after the first 1000 miles. Vary throttle settings in the early miles, dont let her just sit on a motorway at 70 mph.

After the service, gardually build the revs. By the time 2000 miles comes along you should be starting to use the upper part of the rev range.

Check oil regularly.

[tamore]

that's a bit closer to what i was told.

3000 max for 1000 miles and no long periods of same revs. however after oil change 'drive it like you nicked it!'. i'm not arguing, it's their warranty!

[Buffoon]

tamore said:

that's a bit closer to what i was told.

3000 max for 1000 miles and no long periods of same revs. however after oil change 'drive it like you nicked it!'. i'm not arguing, it's their warranty!

Had same advice. Think I know who told you that.

Though not recommended, the odd incursion into higher revs won't be the end of the world, just don't make a habit of it. I wonder how many people stick to recommendations? You start knawing your arm off after a while. For some people 3000 miles is 3 years motoring, and the urge to thrash it and sell it is too great to bare

[andyvdg]

Doesn't is depend on what has been rebuilt ?

If it's the bottom end aren't you back to square one i.e. run it in as from new ?

If it's just the top end then I think I was told you could rev to 4000 rpm straight away (for 1000 miles).

[Mr Freefall]

andyvdg said:

Doesn't is depend on what has been rebuilt ?

If it's the bottom end aren't you back to square one i.e. run it in as from new ?

If it's just the top end then I think I was told you could rev to 4000 rpm straight away (for 1000 miles).

Hmmm, dont take it too easy or you will glaze the bores in the first 100 miles. You only get one chance to bed the rings in while they cut in, if you screw this up, you'll have a oil burinig engine for life...

Mr F

[Chris_S]

Guys - This is what is states in my Tamora manual about running in:

"Most importantly, drive fairly normally. Being too gentle with an engine when running in can be as bad as being too rough. Although it is important to avoid full throttle or over 4,000 rpm during the first 1,000 miles, occasional bursts (c.5 seconds) of 75% throttle up to 4,000 rpm, will help to bed the piston rings in."

The advise I had after the first service was to gradually increase the revs as the miles go. Increase revs by 500rpm every 500 miles approx.

Chris

[sidewayz]

Buffoon said:

For some people 3000 miles is 3 years motoring, and the urge to thrash it and sell it is too great to bare

...and your handle is ?

Edited by sidewayz on Thursday 2nd August 22:19