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TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.

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Old 09-12-2003, 06:39 AM   #1
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Elongating center intake manifold bolt holes

Could someone post a pic of what the TPI lower intake manifold center bolt holes should look like after elongationg a '87 or later intake manifold to fit pre-1987 cylinder heads?

Also, I have a chance to buy a post '87 lower intake manifold with the center bolt holes already elongated, however, the center bolt holes are completely opened up. In other words, on the exhaust side it is completely open or cut out.

Does this pose a problem?

Thanks
Matt
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Old 09-12-2003, 04:23 PM   #2
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Re: Elongating center intake manifold bolt holes

Quote:
Originally posted by Matt_Ky
Also, I have a chance to buy a post '87 lower intake manifold with the center bolt holes already elongated, however, the center bolt holes are completely opened up. In other words, on the exhaust side it is completely open or cut out.

Does this pose a problem?

Thanks
Matt
Shouldn't, but it will look like A$$.
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Old 09-15-2003, 06:00 AM   #3
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I agree on looking like A$$. However, I just want several opinions on whether or not leaks would be a problem. Anybody else?
Thanks in advance!
Matt
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Old 09-15-2003, 09:16 AM   #4
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i've done it several times and have never had a problem, just set the intake on the heads and you'll see what you need to do.
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Old 09-15-2003, 06:46 PM   #5
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Bohn333,
Thanks for the reply. You did see where I said the holes are completely opened up?
I assumed by elongating the center bolt holes folks meant just opening up the holes towards the cylinder head and then using a spacer or something.
I've enever seen one completely cut out on that side. Have you used one like this?
It looks like I am going to have to use a washer (big enough to cover the diameter of the bolt head) that will sit up on top of the intake manifold, not down in bolt hole area if that makes sense. Do you know what I mean?
Thanks
Matt
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Old 09-15-2003, 06:46 PM
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