GT40 Gasket, Riser, Manifold
Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: General Discussion
Forum Discription: Anything Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=41037
Printed Date: May-03-2024 at 9:53am
Topic: GT40 Gasket, Riser, Manifold
Posted By: SKIGT40
Subject: GT40 Gasket, Riser, Manifold
Date Posted: May-08-2017 at 8:35pm
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Hi All I'm new to posting but have been reading the forum for years. I have a 95 Ski Nautique196 GT40 EFI, I'am replacing the gaskets in-between the riser and manifold that i bought from SKIDIM. Is it possible to sand down the riser and manifold? What would be the best way to do it? |
Replies:
Posted By: TRBenj
Date Posted: May-08-2017 at 8:39pm
| 60 grit sandpaper wrapped around a sanding block works well. |
Posted By: lewy2001
Date Posted: May-08-2017 at 8:50pm
Bastard file and a good eye. Keep a straight edge handy to check that good eye though  ------------- If you're going through hell, keep going http://www.correctcraftfan.com/diaries/details.asp?ID=2999" rel="nofollow - 89 Ski <a href="http://www.correctcraftfan.com/diaries/details.asp?ID=5685" ta |
Posted By: gun-driver
Date Posted: May-08-2017 at 9:11pm
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I did mine last year when I added a 1" riser block and did not see a need to flatten the surface. Is yours rusted badly or are you trying to remove the old gasket why do you need to sand/flatten the surface. oops misread post thought he was talking intake manifold, damn Molson Canadian... never mind 
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Posted By: SKIGT40
Date Posted: May-08-2017 at 9:52pm
| I have cleaned them off with steel wool , but there is a bit of rusty unevenness in some places. I'm not sure what is a reasonable amount of unevenness. I would post a pic but am not quit sure how to do it, Do i need to request permission from the forum? |
Posted By: 8122pbrainard
Date Posted: May-08-2017 at 10:14pm
Russ, Use the "post reply" and not the quick. Click on the icon of the tree with the up arrow. A browse box will come up allowing you to select anything off your computer. Welcome to posting. Pictures of the boat would be great too. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
SKIGT40 wrote:Posted By: 2tall
Date Posted: May-11-2017 at 7:54pm
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I had a similar issue on my thermostat housing and I used a fine grit sandpaper on a drill attachment like a sanding disc, but it had a soft back. It was from a 3m headlight restoration kit. The sandpaper was 500 or maybe even 750 grit. If I paid close attention and kept the disc as level as possible and only did a little bit of sanding then backed off, then a little, then back off, it worked perfectly and cleaned up the surface nicely, but I was only after removal of a very small amount of rust. ------------- 2Tall - 1996 Ski Nautique GT-40 |
Posted By: TRBenj
Date Posted: May-11-2017 at 8:02pm
| I would skip the goop and focus on getting the mating surfaces flat. |
Posted By: 8122pbrainard
Date Posted: May-11-2017 at 8:05pm
Mark's method is the best for cleaning up a gasket surface by hand especially surfaces that must be as flat as possible.
------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: SKIGT40
Date Posted: May-11-2017 at 8:12pm
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Update, I sanded it down with metal sand paper with a vibrating sander first with 100 grit then 600. Came out great very smooth and got rid of the rusty spots and unevenness. I'm Still Having Issues uploading Pics, I get error messages. |
Posted By: 8122pbrainard
Date Posted: May-11-2017 at 9:34pm
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Again, any gasket surface needs to be flat. A flat bastard file and a straight edge works. Anything with a soft backing pad such as a vibrating sander, a dual action sander or a disk sander will round over the flat surface. Do not rely on any type a thick gasket compound such as silicone to seal a surface meant to be flat. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: SKIGT40
Date Posted: June-26-2017 at 5:19pm
| To sum up . I sanded everything down smooth as possible . Put new gaskets from ski dim. Then was able to source the bolts from fastenal, the small ones were exact size the big ones I had to cut a 1/4 inch for it to fit. Bolts were grade 8 zink plated, bolts costed me about 10 bucks. All seems to be good now, thanks All for the advice. |
Posted By: gun-driver
Date Posted: June-27-2017 at 12:58am
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Coat the bolts with anti-seize to keep them from rusting in place. I take mine out one at a time and re-coat about every other year or so. They still look like brand new and easy in easy out. |
Posted By: 8122pbrainard
Date Posted: June-27-2017 at 6:44am
Paul, Maybe you should try a better brand of anti seize or, get some help with that OCD issue!  ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: JPASS
Date Posted: June-27-2017 at 8:28am
First thing I thought of when I read your reply  ------------- '92 Correctcraft Ski Nautique |