ausmini :: View topic - re-bore or hone?

You can see the wear at the top of ring travel, a hone won't remove that.
You will probably find a new set of rings for your old pistons are the wrong side of $100. They won't work well or last long with that wear there.

It needs a rebore and hone to 1310, then you will get nice straight round bores with the right piston clearance. :wink:

A set of +.040" Hypatec pistons and Hastings rings is only around $170.
UK `AE Hepolite' ones are dearer, but no better.

Did the GT block come with any other goodies?

Mick wrote:

Did the GT block come with any other goodies?

unfortunately not mick... crank would've been nice!

Scott - so size really does matter?? :lol:

What crank do you need :?:

If you are not worried about doing another rebuild on it you may as well go straight to +60

BALLISTIC wrote:

What crank do you need :?:

GT or mkII S would be nice!!

BALLISTIC wrote:

Just check the block isn`t sleaved first,,, :-)

Author:	Brown Clubman [ Fri Oct 31, 2008 9:21 pm ]
Post subject:	re-bore or hone?
How does one come to this decission? I've recently purchased a 1275 for my rebuild that I'm told is +20thou. The bores look to be in pretty good condition with a very slight lip and previous hone markings still present. I like the idea of keeping it at 1293 but reality is it will probably need a re-bore. Is it just a matter of asking someone in the know to have a look and advise? Cheers, BC.

Author:	aaron [ Fri Oct 31, 2008 9:25 pm ]
Post subject:
id go the bore, not much more and it'll give you a much better motor in the long run. do it once do it properly i say. Cheers Aaron

Author:	drmini in aust [ Fri Oct 31, 2008 9:31 pm ]
Post subject:
You can see the wear at the top of ring travel, a hone won't remove that. You will probably find a new set of rings for your old pistons are the wrong side of $100. They won't work well or last long with that wear there. It needs a rebore and hone to 1310, then you will get nice straight round bores with the right piston clearance. A set of +.040" Hypatec pistons and Hastings rings is only around $170. UK `AE Hepolite' ones are dearer, but no better.

Author:	Mick [ Fri Oct 31, 2008 9:38 pm ]
Post subject:
Did the GT block come with any other goodies?

Author:	Brown Clubman [ Fri Oct 31, 2008 9:38 pm ]
Post subject:
drmini in aust wrote: You can see the wear at the top of ring travel, a hone won't remove that. You will probably find a new set of rings for your old pistons are the wrong side of $100. They won't work well or last long with that wear there. It needs a rebore and hone to 1310, then you will get nice straight round bores with the right piston clearance. A set of +.040" Hypatec pistons and Hastings rings is only around $170. UK `AE Hepolite' ones are dearer, but no better. Thanks guys. Sounds like a rebore is definitely the way to go. appreciate the comments. Think I'll go with a GR RE13 too

ausmini https://www.ausmini.com/forums/

re-bore or hone? https://www.ausmini.com/forums/viewtopic.php?f=2&t=47156	Page 1 of 1

Author:	BALLISTIC [ Fri Oct 31, 2008 10:25 pm ]
Post subject:
You can get +30 pistons so it will be a 1300cc (thats what mine is). I know there is no subsitute for (in this case) cubic centremeters

Author:	Brown Clubman [ Fri Oct 31, 2008 10:40 pm ]
Post subject:
Mick wrote: Did the GT block come with any other goodies? unfortunately not mick... crank would've been nice! Scott - so size really does matter??

Author:	Klubman [ Fri Oct 31, 2008 10:44 pm ]
Post subject:
If it is already +20, will +30 be enough to clean it up? I'm no mechanic but as a machinist I would have thought +40 would be easier to achieve an that +30 would be a bit tight.

Author:	BALLISTIC [ Fri Oct 31, 2008 11:05 pm ]
Post subject:
Brown Clubman wrote: Mick wrote: Did the GT block come with any other goodies? unfortunately not mick... crank would've been nice! What crank do you need Brown Clubman wrote: Scott - so size really does matter?? It has is place BC If you are not worried about doing another rebuild on it you may as well go straight to +60

Author:	Brown Clubman [ Fri Oct 31, 2008 11:41 pm ]
Post subject:
BALLISTIC wrote: What crank do you need GT or mkII S would be nice!! BALLISTIC wrote: If you are not worried about doing another rebuild on it you may as well go straight to +60 nah wanna keep this block for as long as possible - hence the question about honing v's reboring. If I was gunna go BIG I'd just rebuild the 1100s block that's already in the car.

Author:	BALLISTIC [ Fri Oct 31, 2008 11:51 pm ]
Post subject:
Brown Clubman wrote: BALLISTIC wrote: What crank do you need GT or mkII S would be nice!! BALLISTIC wrote: . will have a look see

Author:	drmini in aust [ Sat Nov 01, 2008 6:00 am ]
Post subject:
That block might clean up at +.030" but I wouldn't bet on it. Safer to go to +.040", IMO. Still are 4 rebores available after 1310, (ignoring the 74.7mm maybe possible size).

Author:	TheMiniMan [ Sat Nov 01, 2008 3:04 pm ]
Post subject:
Just check the block isn`t sleaved first,,,

Author:	Brown Clubman [ Thu Nov 06, 2008 7:23 am ]
Post subject:
TheMiniMan wrote: Just check the block isn`t sleaved first,,, how would I do that? It doesn't look like it has been ....

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