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Maintenance & Repair => Mechanical => Topic started by: Martin#30 on August 15, 2014, 01:28:58 PM

Title: Is it possible to check a cylinder head is flat, DIY?
Post by: Martin#30 on August 15, 2014, 01:28:58 PM
Due to a monumentally siezed exhuast stud, a complete failure by Plusgas, heat and bolt extractrors, I had to break out the drill to try and remove a snapped, and stuck exhaust stud.

3 evenings of very careful drilling later, I have managed to drill though the head into the water passage . Muppet  :rofl:

Second hand cylinder head is winging its way to me, but I want to be sure it is completely flat before fitting. Is it possible to do it DIY - maybe I can buy a flat plane something, or is it realistically machine shop only?

Martin.
Title: Re: Is it possible to check a cylinder head is flat, DIY?
Post by: Alzo on August 15, 2014, 04:03:31 PM
To check something is flat you have to do it with something flat...for the tolerances your dealing with an Engineering shop is the only place.
Title: Re: Is it possible to check a cylinder head is flat, DIY?
Post by: ash on August 15, 2014, 09:06:33 PM
You really need a Coordinate measuring machine (CMM), a mill and a Dial Test Indicator, or a surface table with a DTI again. Where are you ?
Title: Re: Is it possible to check a cylinder head is flat, DIY?
Post by: Martin#30 on August 18, 2014, 10:51:50 AM
Quote from: ash on August 15, 2014, 09:06:33 PM
Where are you ?

Betwixt Bristol and Swindon. I have been pointed towards an engineering firm called Piston Broke in Bristol. I have used Tim Radley a few times before in Gloucester too, I imagine he has the gear to do this also.

As it is only a simple check and confirmation of 'flatness' I need, I am hoping to find someone local-ish who would be happy to check it whilst I wait.

Martin.
Title: Re: Is it possible to check a cylinder head is flat, DIY?
Post by: ash on August 18, 2014, 10:59:35 AM
I could check it in (after) work one afternoon if you can get it to Bishops Cleeve.
Title: Re: Is it possible to check a cylinder head is flat, DIY?
Post by: Martin#30 on August 18, 2014, 12:04:37 PM
Quote from: ash on August 18, 2014, 10:59:35 AM
I could check it in (after) work one afternoon if you can get it to Bishops Cleeve.

Ash,

That is a very kind offer, thank you. I am waiting on a call back from a local place, but if that proves no good, I will PM you and see if your offer still stands.

Martin.
Title: Re: Is it possible to check a cylinder head is flat, DIY?
Post by: mc101 on August 18, 2014, 03:45:10 PM
Tim Radley at Race Developments in your neck of the woods will do this for you ...