Re: new distributor
[Re: 8urvette]
#2763587
04/13/20 06:56 PM
04/13/20 06:56 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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no change. I swapped out the water pump pulley that is 1.25" smaller diameter. i think it is something like a 24% change in water pump rpms. NO FRIGGIN CHANGE. Timing is at 15 BTDC, its a 180* thermostat. Should I go to a 160*? would it help? could it help? HELP IF your moving enough water it should help.. how does it start now.. I am wondering if you have blockage in the block or radiator.. for now pull the stat right out and see what it does.. you could have a blockage in the block or radiator
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Re: new distributor
[Re: 8urvette]
#2763610
04/13/20 07:23 PM
04/13/20 07:23 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I just use a HHR(chevy) fan and shroud and dont have any problems on my SB street rod... take your stat out and try it
Last edited by MR_P_BODY; 04/13/20 07:26 PM.
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Re: new distributor
[Re: MR_P_BODY]
#2763634
04/13/20 08:20 PM
04/13/20 08:20 PM
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Joined: Jan 2004
Posts: 668 IL
Dart451
mopar
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mopar
Joined: Jan 2004
Posts: 668
IL
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What water pump your running? I had bad luck with a 440 source high volume one.
Last edited by Dart451; 04/13/20 08:25 PM.
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Re: new distributor
[Re: Cab_Burge]
#2763677
04/13/20 10:49 PM
04/13/20 10:49 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I agree with Cab... its time to start testing.. if this pump or the housing has a flaw you need to find it.. we know based on what you said before.. the engine has had 2 pumps on it and that didnt correct the issue... you tried changing the timing around and that didnt correct it.. its had a few radiators...if 440 had a pump or housing issue(I dont know sense I dont do much on 440s) then maybe you need to check it.. as a check and your gauge accuracy with thermocouples or another test item... this should be a start... and ask question before you jump
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Re: new distributor
[Re: mopar dave]
#2763800
04/14/20 11:28 AM
04/14/20 11:28 AM
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Joined: Jul 2011
Posts: 782 wine country
8urvette
OP
super stock
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OP
super stock
Joined: Jul 2011
Posts: 782
wine country
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Here are the 2 water pump housings...
The one with the small amount of orange in the pic is off the 383. it appears to actually be a mopar part... HMMM...
I ran a straight edge across the face of both pump housings and dropped a caliper down to measure where it touches the angled part for the impeller to sit. The rusty one has a closer tolerance by about 8 thousandths... it also has smaller coolant passages.
Do i just replace everything??????
Last edited by 8urvette; 04/14/20 11:29 AM.
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Re: new distributor
[Re: 8urvette]
#2763819
04/14/20 11:56 AM
04/14/20 11:56 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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It might be a smart move to replace it all.. just a guess here.. I sure would like to see one of the housing that had the known issue.. on my SB stuff I run a motor plate and have the pump on top of the plate so there is a pretty good space where the pump mounts EDIT You also need to get ALL of the air out of the system... I put a bleed on mine
Last edited by MR_P_BODY; 04/14/20 12:04 PM.
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Re: new distributor
[Re: @#$%&*!]
#2763920
04/14/20 04:21 PM
04/14/20 04:21 PM
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Joined: Jul 2011
Posts: 782 wine country
8urvette
OP
super stock
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OP
super stock
Joined: Jul 2011
Posts: 782
wine country
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It sure would suck to find out the problem is just a lean carburetor. Do i just replace everything??????
Funny side note... already been there and done that. OK, 440source housing and pump from my 540. Takes a lot longer to get to temp, then hits 220, comes down to 180 and fan shuts off. Heats back up and hit 220 fan is on and brings it down to 205* just sitting idling in my carport. Stays at 205 for a long while. And its 15* warmer today than yesterday. Conclusion at this point is the smaller port 440source housing has tighter tolerance to the pump veins, thus moving more coolant.
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