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#21 |
![]() Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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I am going to look at the hardware store today for stainless washers....you know Kurt White has these for $9.99 each, not cheap but not too bad.
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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#22 |
![]() Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,645
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They are listed, but the inventory shows "0 units in stock" as usual it's my luck. I would have bought them just because I know they would be the right parts instead of trying to cobble up something.
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1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member |
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#23 |
![]() Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,153
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What is the DIA of the late IH holes? is it the same as the 'non-baffled' area of the 90 IH?
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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#24 |
![]() Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,645
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Okay, near as I can determine with my simple non-digital caliper/slide ruler....the holes are all the same size on the 90 and 91 I/H's....I only have those parts so I would figure the rest are the same also? I doubt that the holes are different sizes, it don't make sense.
![]() The diameter is somewhere between 1 1/16 " and 1 1/32"....I tried 1 & 1/16" and it is too big.....I can't seem to find a 1 & 1/32" plug from Dorman's selection. They list it, but rockauto don't list it. It's a real pia to search thru the dorman pfd by size. I almost gave up at one point. I tried to convince myself that using a ported plenum and I/H on an unported head is useless. However I figured if the difference between my stock head port size and the ported I/H wasn't that far off it would not be too much of a stupid move to use the ported stuff? Besides I figured if the ports' size difference was too big, I could always close up the bottom of the I/H port to the head port size. However unless I can fix the PCV restrictor issue first I'm not even bothering to pull my stuff to see how badly the port size & alignment is off. I was thinking of e-mailing Mr. Carter but it seems like I'd be wasting his time on such trivial stuff.
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1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member |
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#25 |
![]() Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,153
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If you contact carter double the amount and I would buy a set
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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#26 |
![]() Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,645
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I may work up to it yet....you're in Jeff! I'll double the order & keep you in the loop.
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1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member |
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#27 |
![]() Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,153
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do you have a PN for the dorman 1 1/32 freeze plug?
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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#28 |
![]() Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,645
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I'll pull up the pfd and look for it. Give me a minute.
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1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member |
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#29 |
![]() Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,153
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I just did , 550-013 is 1-1/32"
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 Last edited by -=Jeff=-; 01-02-2011 at 11:38 AM. |
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#30 |
![]() Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,645
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I found two others 555-165 and 555-173 both are steel.
I'm going to look in my shop at what I bought so far I know 1 1/8" is too big, I just can't be 100% that I didn't order any 1 1/32" ones. Yea, I remembered correctly. I never bought any 1 1/32" plugs to try.
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1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member Last edited by tomtom72; 01-02-2011 at 11:41 AM. |
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