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#1
08-18-2006, 11:51 AM
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8 bolt water pump overheats :(
Does anyone have any output on the 8 bolt pumps this 67 GTO has run hot for 34 years and now even hotter with a new motor! Do ya scrap this for the 11 bolt pumps or can they be tweaked to cool better??
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#2
08-18-2006, 12:40 PM
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Welcome.
Go to the top thread in this forum. It's titled "chalk one up for the cast impeller". it's a long read, but the first few pages should give you some ideas. George |
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#3
08-18-2006, 01:15 PM
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Yes, what George said. That thread is a good read. But that applies to the 11 bolt design. Not certain the same applies for the 8 bolt.
Anyway, here is a page which shows the heart of the matter :: closing the gap between the impeller & the divider plate ~ http://www.wallaceracing.com/water-pump-mods.php Hope that helps your cooling issue. |
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#4
08-18-2006, 01:28 PM
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Pulley size?
Shroud? Fan? Heating up at idle or running down the road?
__________________
........I'm just learning as I go....... |
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#5
08-18-2006, 02:14 PM
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I have had the same problem also on my 68 she just runs hot in the summer time .i dont drive it if it is above 85 out .however i am looking foward to tweeking my plates .
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#6
08-18-2006, 02:36 PM
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mine gets hotter than hell. 220 plus I just keep driving it. It didnt hurt it to run hot in 1968 and it wont now..
Actually, I am such a liar, the last few years I just dont drive my old cars in the summer daytime because they dont have AC. Im not concerned with the motor just my own comfort. (8-) |
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#7
08-18-2006, 06:28 PM
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GRX, you are incorrect, those pictures on your link and the original post by George here on this board (page 1) were pictures of my 8 bolt pump!
Charles |
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#8
08-18-2006, 10:50 PM
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Guess it was the 2nd and 3rd lines on that page which threw me off.
 > " This basically applies to the newer 11 bolt water pump. The older water pump is designed differently and may not apply. " < Seriously though, the 8-bolt set up is nearly identical so should work. Which is what you were trying to say I believe. Thanks Old Goat. |
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