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  #211  
Old April 17th, 2017, 02:50
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Re: New Renix Coolant Bottle and Cap problems

Cap color on the Volvo cap does not tell the whole story. Autozone has the 150 Kpa (21.7 psi) cap with a black cap now instead of green with their part number 7033. It is stamped 150 Kpa, and the bottom valving looks different.

Looks and fits like the green cap I have used for 10 years. Time will tell
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34 MPG , '85 2WD Cherokee Pioneer with custom installed, 64 hp, 2.2 L Nissan SD22 Diesel 5 spd Manual; & 4 Renix XJs, '87 Wagoneer 4.0, 4WD, 89-Cherokee, 4WD, '87 Cherokee 2WD, & '89 Cherokee Pioneer 2WD, all 4dr. #2091
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  #212  
Old April 17th, 2017, 08:28
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Re: New Renix Coolant Bottle and Cap problems

HOLY REVIVED THREADS, BATMAN!!!!!!!!!!!

Quote:
Originally Posted by Saudade View Post
12-15psi according to my 88 FSM. Confirmed.
I finally got a copy of the 1990 FSM: It says 12 to 16 PSI for a radiator mounted cap, 16 to 18 PSI for the bottle mounted cap.

I am pretty much done with the Volvo bottles. They are getting harder to find in the junkyard. I looked on line for a replacement and found them in the $50 range for a factory replacement. I was reading the specs when I realized the bottle is rated for the 11 to 12 PSI working pressure. Well derrrrrr! That is why they all have the 75 Kpa caps on them.

I still have spare bottles, and 150 Kpa caps, plenty of time to think about fitting another closed system reservoir.
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  #213  
Old April 17th, 2017, 12:01
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Re: New Renix Coolant Bottle and Cap problems

That is interesting for sure.

"I finally got a copy of the 1990 FSM: It says 12 to 16 PSI for a radiator mounted cap, 16 to 18 PSI for the bottle mounted cap."

I guess they decided the lower pressure 1987 bottle cap was too low, LOL.
The bottle mounted cap has 3 sealing points, the 2 internal valves themselves (vent in and vent out) and the cap gasket that seals to the bottle. If we keep our rigs at or under about 225 F we really should not have any issues. My aftermarket POS plastic Renix bottle (modified as discussed here) on the 89 jeep outlasted the 1 year old aluminum plastic radiator (the upper passenger side plastic tank blew) by about 9 years and about 90,000 miles. I wonder if 21.7 PSI is too much for the cheap radiators? Both my 3 row all metal brass radiators are 8-9 years old now.

I suspect there are two different pressure rated Volvo bottles, but the higher pressure bottle may not be the nice fit of the one you have been using.
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34 MPG , '85 2WD Cherokee Pioneer with custom installed, 64 hp, 2.2 L Nissan SD22 Diesel 5 spd Manual; & 4 Renix XJs, '87 Wagoneer 4.0, 4WD, 89-Cherokee, 4WD, '87 Cherokee 2WD, & '89 Cherokee Pioneer 2WD, all 4dr. #2091
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  #214  
Old April 17th, 2017, 12:33
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Re: New Renix Coolant Bottle and Cap problems

I'm still using the Quadratec bottle I got years ago. I bought a cap at my local Jeep dealer and it's held up well. I also have a new spare bottle as well as a Volvo one I picked at a JY (no cap).

I've been doing fairly regular flushes and check my coolant level often. My bypass valve is looking pretty ratty these days so I may have to splurge and replace it soon.
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  #215  
Old April 17th, 2017, 13:02
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Re: New Renix Coolant Bottle and Cap problems

COOL, pun intended.

The reason for using the Volvo cap is the dealer cap is taller and the hood mashes the bottle-cap assy when you close the hood, unless you lower the shelf or use a low profile Volvo cap. I used 8muds worm gear clamp trick for some time on the aftermarket Renix cap, but did not like the crushed bottle stress cracks that were forming.

Quote:
Originally Posted by Saudade View Post
I'm still using the Quadratec bottle I got years ago. I bought a cap at my local Jeep dealer and it's held up well. I also have a new spare bottle as well as a Volvo one I picked at a JY (no cap).

I've been doing fairly regular flushes and check my coolant level often. My bypass valve is looking pretty ratty these days so I may have to splurge and replace it soon.
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Quote=8Mud: "Go ahead and put up the best fence you can build, I'll bet on some Mexican with a few dollars of nails and a pile of scrap lumber."
34 MPG , '85 2WD Cherokee Pioneer with custom installed, 64 hp, 2.2 L Nissan SD22 Diesel 5 spd Manual; & 4 Renix XJs, '87 Wagoneer 4.0, 4WD, 89-Cherokee, 4WD, '87 Cherokee 2WD, & '89 Cherokee Pioneer 2WD, all 4dr. #2091
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  #216  
Old April 17th, 2017, 16:16
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Re: New Renix Coolant Bottle and Cap problems

Yep! Mine is the "tall" cap. It's worn through the insulation under the hood. Yes, I stiil have it!!

I recall "bending" the bracket a bit downward.



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  #217  
Old April 17th, 2017, 19:08
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Re: New Renix Coolant Bottle and Cap problems

Looks unused like its been in a museum LOL.
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34 MPG , '85 2WD Cherokee Pioneer with custom installed, 64 hp, 2.2 L Nissan SD22 Diesel 5 spd Manual; & 4 Renix XJs, '87 Wagoneer 4.0, 4WD, 89-Cherokee, 4WD, '87 Cherokee 2WD, & '89 Cherokee Pioneer 2WD, all 4dr. #2091
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  #218  
Old April 18th, 2017, 07:13
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Re: New Renix Coolant Bottle and Cap problems

The bottles are the weak point.

I got tired of replacing them so I did an open conversion on my 3 Renix rigs. The radiators were almost new. Shoulda switch to the open style when I replaced them.
I'm planning on doing a write-up on it someday. I have the parts list done.
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  #219  
Old April 18th, 2017, 07:51
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Re: New Renix Coolant Bottle and Cap problems

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Originally Posted by Ecomike View Post
Looks unused like its been in a museum LOL.
Funny, I checked the beginning of this thread and see my post from 2008. Yes, that's the same tank and cap.
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  #220  
Old April 18th, 2017, 17:09
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Re: New Renix Coolant Bottle and Cap problems

INDEED!!!!! You and I must be the only two that can get 8-10 years out of plastic Renix bottles on Renix closed coolant systems. At $25/bottle that is about $3/year cost, and most coolant hoses start to get questionable after 10 years anyway.

Quote:
Originally Posted by Saudade View Post
Funny, I checked the beginning of this thread and see my post from 2008. Yes, that's the same tank and cap.
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Quote=8Mud: "Go ahead and put up the best fence you can build, I'll bet on some Mexican with a few dollars of nails and a pile of scrap lumber."
34 MPG , '85 2WD Cherokee Pioneer with custom installed, 64 hp, 2.2 L Nissan SD22 Diesel 5 spd Manual; & 4 Renix XJs, '87 Wagoneer 4.0, 4WD, 89-Cherokee, 4WD, '87 Cherokee 2WD, & '89 Cherokee Pioneer 2WD, all 4dr. #2091
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  #221  
Old April 18th, 2017, 18:52
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Re: New Renix Coolant Bottle and Cap problems

AND the ac is still charged with R12 and blows about 40F....
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  #222  
Old April 18th, 2017, 19:34
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Re: New Renix Coolant Bottle and Cap problems

OK, rub it in, LOL.

Quote:
Originally Posted by Saudade View Post
AND the ac is still charged with R12 and blows about 40F....
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Quote=8Mud: "Go ahead and put up the best fence you can build, I'll bet on some Mexican with a few dollars of nails and a pile of scrap lumber."
34 MPG , '85 2WD Cherokee Pioneer with custom installed, 64 hp, 2.2 L Nissan SD22 Diesel 5 spd Manual; & 4 Renix XJs, '87 Wagoneer 4.0, 4WD, 89-Cherokee, 4WD, '87 Cherokee 2WD, & '89 Cherokee Pioneer 2WD, all 4dr. #2091
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  #223  
Old April 20th, 2017, 23:35
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Re: New Renix Coolant Bottle and Cap problems

Quote:
Originally Posted by Muad'Dib View Post
As I hate to admit it, I ended up switching to an Aluminum bottle from MAC's Radiator (they are local to me).

I didn't have an issue with caps anymore once I switched to the Volvo, but bottles started giving me headaches. I was buying new ones once a year it seemed. Because of the expansion and contraction of the bottle, they seem to develop cracks easily. I tried all different brands (besides MOPAR OEM) and all seemed to have the same issue. It may be issues because of where I live as seasons are well defined. (100 degree summers and snowy 25 degree winters)
Still true for me. Once I did the Aluminum bottle I have had 0 issues and haven't worried about it at all.
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  #224  
Old May 12th, 2017, 17:59
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Re: New Renix Coolant Bottle and Cap problems

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Still true for me. Once I did the Aluminum bottle I have had 0 issues and haven't worried about it at all.
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