Help - Cylinder Block Front Covers / Rear Piston cover sealant query

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Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  FodenSWB on Wed 31 Dec 2014, 3:06 pm

Hi,
We are in the process of fitting the cylinder block front covers an associated rear machined parts but the instructions do not appear to reference applying sealant to these items are they fitted as is or should I be applying foliac paste or something else to them prior to final fitting and then tightening of the nuts on the studs.

Cheers
Nick & Ken

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  Old Down Trevor on Thu 01 Jan 2015, 9:53 am

I would use the gaskets supplied plus a smear of foliac. Have you checked to ensure that the central hole in the front covers is concentric with the outer diameter that locates in the cylinder bore- mine were not concentric consequently when assembled everything locked up solid - I could nut move the piston. Thankfully problem is being resolved with the help of Steve
regards
Old Down Trevor

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  FodenSWB on Thu 01 Jan 2015, 10:49 am

Cheers, we had thought that it might be the case that we needed to use foliac as well as the gasket in a similar manner to the cylinder block. We have had the pistons and guides fitted but at that point without the piston rings so will check the fit again once they are fitted to make sure we don't have any issue with movement of the piston.

Cheers
Nick & Ken

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  mikero on Thu 01 Jan 2015, 10:51 am

If you are going to put any kind of sealant on the gaskets its a good idea to drill and tap each cover for a release bolt.

Mike

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  Vapor on Mon 05 Jan 2015, 12:28 pm

Well for what's it's worth I fitted the gaskets as supplied they sealed perfectly just as it said on the tin, never had a wisp of any steam losses.

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  FodenSWB on Thu 08 Jan 2015, 8:05 am

Thanks for that may just fit them dry then to see what happens.

Cheers
Nick

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Gaskets

Post  Steve Traill on Thu 08 Jan 2015, 10:08 am

On the DCC & my aggi I use gaskets for all mated surfaces and also use Hylomar gasket sealant on one side and grease on the other. It's much cleaner than foliac, disassembles without damaging the gasket and always seals perfectly.

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  lynnr on Thu 08 Jan 2015, 1:41 pm

I am a total skin Flint.

All my gaskets are made from Cornflake packet with oil on both sides when assembling. Seals very well and allows easy non damage removal and refit of covers.

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Gaskets

Post  Steve Traill on Thu 08 Jan 2015, 2:36 pm

What a good idea, I'll try that next time.

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  mikero on Fri 09 Jan 2015, 2:22 am

The cornflakes will be beneficial as well.

Mikero Smile

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  Tony King on Fri 09 Jan 2015, 5:21 am

Well well, I wouldn't have thought cornflake cardboard would be up to the job!... Obviously it is, so I'm now awaiting my daughter to finish up the Crunchy Honey Nut Cornflakes, so I can get going on all the gaskets for both my engines!! Very Happy

I'm assuming "Crunchy nut card board" is same (or better than) ordinary corn flakes here, also does it have to be Kellogs cardboard? Laughing Laughing

Good one Lynn!

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Tony

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  IanL on Fri 09 Jan 2015, 8:09 am

I can confirm the Crunchy nut cornflake cardboard works. I coated both sides with foliac, not thought about oil. Not tried to take it apart as yet so may need to remake .

Ian

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  Tony King on Fri 09 Jan 2015, 8:20 am

EXCELLENT, that's a definite then, I'll get my daughter on the crunchy nut corn flake diet!! Very Happy

Regards,
Tony

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  lynnr on Fri 09 Jan 2015, 11:33 am

Kellogg is better cardboard.

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

Post  IanL on Sun 11 Jan 2015, 8:47 am

It is Kellogg!!!! Or it's they are?

Such high quality engineering on this forum of recent .

Ian

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Re: Help - Cylinder Block Front Covers / Rear Piston cover sealant query

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