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Re: Sprint Engine Rebuild
Posted: Sun Apr 27, 2014 10:06 am
by xvivalve
Three hours!!!
Is that a +10 rebore by honing then?
Re: Sprint Engine Rebuild
Posted: Sun Apr 27, 2014 10:33 pm
by shaunroche
Wow, what good timing this is!
I have this very day bought a running sprint engine to rebuild with a view to building a track car: I haven't got anything else yet...just an engine!
So, I'll be keeping an eye on this build for sure!
How are you getting on with this now, still progressing?
Re: Sprint Engine Rebuild
Posted: Mon Apr 28, 2014 3:42 pm
by matt of the vivas
That needs a rebore. You wont ever remove those marks by honing alone, you will be wasting your time and wearing out your hone trying..
Matt.
Re: Sprint Engine Rebuild
Posted: Mon Apr 28, 2014 4:17 pm
by shaunroche
I assume then that honing doesn't remove as much material as a re bore then?
Re: Sprint Engine Rebuild
Posted: Mon Apr 28, 2014 4:23 pm
by dursley92
For me that needs a re-bore or maybe just a liner in the damaged one if the rest are good..
Re: Sprint Engine Rebuild
Posted: Mon Apr 28, 2014 7:02 pm
by Mad Mart
shaunroche wrote:I assume then that honing doesn't remove as much material as a re bore then?
The Honing tool is really just for deglazing the bores so that new rings can bed in properly. I usually only spend about 10-15 mins. deglazing (per cylinder).
Thanks for the feedback guys. You're probably right about getting it rebored/resleeved but I'm in no hurry so I may just wear out my honing tool trying. I'd better check the bore diameter as well. It's probably eliptical by now.
Re: Sprint Engine Rebuild
Posted: Tue Apr 29, 2014 9:39 am
by shaunroche
The Honing tool is really just for deglazing the bores so that new rings can bed in properly. I usually only spend about 10-15 mins. deglazing (per cylinder).
Ah I see! Only ever built new engines so reconditioning techniques are all a bit of a mystery to me at the moment!