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Post by gordo on Jun 29, 2012 17:22:29 GMT 12
You can't just fit another main cap to a block, they're align bored and honed and each one is slightly different - if you're VERY lucky, there'll be just a fraction of a thou' misalignment sideways - much more and you'll have a bearing failure. If there's a misalignment vertically, you'll have either insufficient crush, which will mean a spun bearing, or to little which will mean the cap isn't seated properly.
If you do decide to take the risk, you MUST check it carefully with an inside micrometer to ensure it's got a round tunnel - unless you go to the expense of having the bottom end re-bored, which is a specialist job and quite expensive.
There are also two different versions of the 1256 block' oil breather, an earlier type that is the same as the 1059 and 1156 which, IIRC, is a simple breather to the atmosphere, and the later type which is internal. Been a long time since I've seen the early type, so may have the details condused, mind.
Where are you based? I've a complete Chevette 1256 engine that's been sitting outside for some years, you can have it for free, if you can collect it - there's probably some internal rusting, but may be a suitable block for you?
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Post by wartly on Jun 30, 2012 14:53:24 GMT 12
Thanks for the response I am in Whangarei Where are you
I really dont think its worth proceeding with the expense
This engine is in the 2nd Chevron Kitcat built in 1985 The car is based completly on the Viva diff, front ass ,gearbox steering
I may look at a repower job
What a great website I have only just heard about it
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Post by gordo on Jun 30, 2012 17:09:19 GMT 12
If that's the car I'm thinking of, it was at the first Whangarei Street Sprint with a 1156 Viva engine. I had the blue Chevette hatch.
If you're doing a re-power, have you considered going the m/cycle engine route?
Oh, I'm in West Auckland, if you're coming down for anything, can just throw it in the back of the car or a light trailer.
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Post by wartly on Jun 30, 2012 20:49:08 GMT 12
Thanks I may be down that way next month Email me wartly@slingshot.co.nz and I will send you a photo of my chevron I am interested in its history as I have not had it long
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Post by gordo on Jul 1, 2012 0:12:44 GMT 12
Come to think on it, I've a short block that's been stored inside for about 15 years - had done maybe 20k kms on a rebore (+20, if I've the right engine in miind, new oil pump, timing chain, crack testing, etc, and I may still have a light flywheel that needs a ring gear (they seem to have been bloody hen's teeth!). If you want to consider staying 1256, we should be able to work something out.?
These engines can really respond to head work, depending on which version of the head you have - early HC were quite a bit better flowing, but the later ones can be reworked very effectively. Check out my early posts for a summary of some mod's I've done to good affect on previous engines.
Give me a reminder, when you know you're coming down.
Oh, I assume you've joined the Northland Car Club, should be some folks who can help there and pass on my regards from Gordon.
Got some health issues at the mo', but should be up that way again, before too long, for a visit.
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Post by zep on Jul 2, 2012 14:52:07 GMT 12
Gordo, if he does not want this short block, I could be interested.
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Post by gordo on Jul 3, 2012 2:11:05 GMT 12
Either way should be fine.
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Post by crazytim on Jul 3, 2012 10:43:02 GMT 12
Leon, PM TC... he got the sedan shell from me Saturday and said he has his OG 1256 which was a runner before he pulled it out of his project car. He is out South ways Pukekohe or something... said it will be cheap
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Post by crazytim on Jul 3, 2012 10:43:48 GMT 12
Leon, PM TC... he got the sedan shell from me Saturday and said he has his OG 1256 which was a runner before he pulled it out of his project car. He is out South ways Pukekohe or something... said it will be cheap Ignore, he posted already |
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Post by wartly on Jul 6, 2012 16:04:11 GMT 12
Gordo What price do you want for the 1256 Shortblock
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Post by gordo on Jul 6, 2012 19:41:20 GMT 12
$50 - and I'll throw in the engine that's been sitting outside?
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Post by wartly on Jul 7, 2012 9:47:17 GMT 12
Okay I will pick it up next week if okay Please email contact details to wartly@slingshot.co.nz
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Post by lockie1994 on Oct 25, 2012 19:15:51 GMT 12
have any of yas got any spare 1256 bits ? i somehow need to find a new oil pump ? cheers
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Post by gordo on Oct 25, 2012 23:55:36 GMT 12
Straight or offset drive for the distributor?
I think I've a new one of each but will have to check - they don't come with pickups, though, so you'll need to clean the old one carefully.
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Post by lockie1994 on Oct 26, 2012 18:27:12 GMT 12
straight?  ? heres a pic ov mine and my dizzy shaft hope you can tell by this pic. my pickup should clean up nicely thanks Attachments:
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? heres a pic ov mine and my dizzy shaft hope you can tell by this pic. my pickup should clean up nicely thanks