Fresh Engine - How Soon Can I Race??
#1
Posted 07 March 2006 - 04:14 PM
My freshened 383 Chev is nearly ready for me to pickup (can't wait much longer)..
Once it's back in the Torrie and running, how many km's do I need to clock up before dyno-tuning and drag racing?
Thoughts? Past experiences?
Cheers.
#2
Posted 07 March 2006 - 04:16 PM
#3
Posted 07 March 2006 - 04:27 PM
that way it gives all the gremlins time to be sorted
#4 _Keithy's_UC_
Posted 07 March 2006 - 05:07 PM
#5 _mra9x_
Posted 07 March 2006 - 05:09 PM
#6
Posted 07 March 2006 - 05:39 PM
dont sound good 2 me but ive herd it from a few people.
Evan
#7 _Bomber Watson_
Posted 07 March 2006 - 05:41 PM
#8 _ChiaLX_
Posted 07 March 2006 - 05:44 PM
I know 1 mechanic who did this with his own rebuild ( set the tyres alight straight after it was rebuilt) and the motor was good for at least 10 years.
I know my current engine builder would kick my butt if i even mentioned doing that.
So I guess every one has there own ideas.
Peresonally i think at least 1000 k's and frequent oil change is a better option.
#9 _CHOPPER_
Posted 07 March 2006 - 05:55 PM
#10 _coupe202_
Posted 07 March 2006 - 06:10 PM
everyone got their own way of running in an engine. its around the 500 to 1000 klm mark before giving it a hard time.
#11 _82911_
Posted 07 March 2006 - 07:57 PM
Let the engine heat soak a couple of times.
Check all fasteners are good and tight (no leaks).
Run the car up a long incline the longer the better...let load in 1 gear higher than normal (not labouring) just loaded more than normal. punctuate this with........... (the ocasional drop it back a gear and floor it)!!
Few good stabs of the throttle on the way home...after say a 20 minute drive like this it is ready for redline.
These days the rings will seat within 10mins of initial fire up if the correct grit was used on the hone.
If the rings haven't seated by then, they aren't ever going to seat!
Ready to race!!!!
Cheers Greg..
#12 _Herne_
Posted 07 March 2006 - 08:26 PM
Herne
#13
Posted 07 March 2006 - 08:30 PM
I use to believe in 1000kms etc, then realised these top fuelers, they cant run 1000kms to run an engine in, there engines get rebuilt every meeting, just break the cam in and go racing.
#14 _Keithy's_UC_
Posted 07 March 2006 - 08:53 PM
#15
Posted 07 March 2006 - 09:10 PM
2002 half an hour on a dyno ..
...
#16
Posted 07 March 2006 - 09:16 PM
My 2c's.
#17 _CHOPPER_
Posted 07 March 2006 - 09:27 PM
#18
Posted 07 March 2006 - 09:59 PM
#19
Posted 07 March 2006 - 10:55 PM
#20
Posted 07 March 2006 - 11:06 PM
The more people with real tough cars I speak to have all been saying the same thing - break the cam in, drive it around a little bit and go for it! If you break an engine in relatively hard, it will never have ring problems, oil problems etc and will make more power (assuming of course the engine has been built right to start with).
There was a link posted up not long back in another thread talking about this too. I babied my engine so much the first time around and look what happened, so this time, I'm gonna do it much harder.
Chopper - I will see you at Heathcote on the 18th! I'll surely have at least 500km's on the clock by then, plus the trip to Heathcote itself.
If only I had my damn engine back!!!!!! Timelines are oh so cruel.....
#21
Posted 07 March 2006 - 11:14 PM
#22 _LX406_
Posted 08 March 2006 - 08:27 AM
#23 _355lxss_
Posted 08 March 2006 - 08:31 AM
You'll know exactly how much hp/tq its making at the flywheel, any gremlins that pop up will be sorted out, and it will be tuned for max hp and ready to drop in the car to go racing. The only down side is that it's expensive but definitely worth the money.
Each to their own
Edited by 355lxss, 08 March 2006 - 08:33 AM.
#24 _MAWLER_
Posted 08 March 2006 - 03:32 PM
I don't think you'll have any problems racing it gently at 500km's old, so about 16 second 1/4s should be fine
Peace,
#25 _Torana482HP_
Posted 08 March 2006 - 03:51 PM
ive read it in a couple of recent articles,
as was already said, the engine parts are heaps better these days and they dont need running in, its not the 70's anymore. only the cam needs to be properly seated and 15 mins on an engine dyno at 2500 rpm does the trick.
when my engine is built im gonna take it to Advanced Engine Dynamics in Bendigo to have it put on the engine dyno for a run in and to max out the HP. let them do it all so i know its all set to put in the car and go pop some tires
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