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head and block surface

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Old

Mar 29, 2004 | 11:48 AM

#1

Thread Starter

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Joined: Jul 2003

Posts: 260

Likes: 0

From: Germany

Car: 91' Camaro

Engine: Carbed 305

Transmission: 5-Speed Manual

head and block surface

I received my Felpro 1094 headgasket (.015") toady. on the installation tips stands this:

Surface finish of the head and block is critical and must be 55 ra (60 rms) or smoother

How can i check, if the surface of the block is ok? the heads are new, so that shouldnt be a problem.

Nebu.

Old

Mar 29, 2004 | 12:26 PM

#2

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Joined: Jan 2000

Posts: 19,655

Likes: 309

You'd need a surface gauge to check it properly. Don't presume that newly machined castings are smooth. They may be flat, but not very smooth.

Old

Mar 29, 2004 | 01:09 PM

#3

TGO Supporter

Joined: Aug 1999

Posts: 14,811

Likes: 1

From: Jackson County

if you search around a bit you ought to be able to find pic or samples of differant surface finishes.

Old

Mar 29, 2004 | 01:19 PM

#4

Thread Starter

Member

Joined: Jul 2003

Posts: 260

Likes: 0

From: Germany

Car: 91' Camaro

Engine: Carbed 305

Transmission: 5-Speed Manual

ok i will try to find some pictures.

what if i cant get a surface gauge to find out if the block is smooth enough?
just use sealer on both sides of the gasket?

Old

Mar 29, 2004 | 02:23 PM

#5

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Joined: Aug 1999

Posts: 14,811

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From: Jackson County

if you can picture 400-500 wet dry paper would be something to compare to. only thing i can think of off top of my head for you to look at.

Old

Mar 29, 2004 | 02:52 PM

#6

Thread Starter

Member

Joined: Jul 2003

Posts: 260

Likes: 0

From: Germany

Car: 91' Camaro

Engine: Carbed 305

Transmission: 5-Speed Manual

400-500? Cant i clean the block and head with 1000 or 2000? i think that would suffice, wouldnt it?

Nebu.

Old

Mar 29, 2004 | 03:18 PM

#7

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Joined: Aug 1999

Posts: 14,811

Likes: 1

From: Jackson County

not to clean it with, to compare the finish to. i was trying to give you a visual aid.

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86, block, blocks, camaro, duplication, felpro1094, finish, head, install, ra, surface, surfacer, surfacing, surfase, tips

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