xjmafia

Well my radiator in my 88 xj needs replaced would a radiator from a 91 with the 4.0 work? i found a guy that is parting his out and has a like new one for sale. id like to save a little bit of money if the price is right otherwise i will buy new. he is also selling the motor and trans rear ends if anyone is interested. the motor has 73k on rebuild. 450 bucks for that

Bustedknuckle

Yes it will work, and is actually a huge upgrade being an open style radiator vs. your closed system. Make sure to get the overflow bottle as well. Very common upgrade for 87-90' Renix owners. Did mine last year and couldn't be happier.

xjmafia

awesome. so what is needed since its different then mine? or is it drop in and go? thanks for the quick reply

ToyRunner1

Wish I'd gone the same route with my 90 when I replaced my rad a few years ago. Take a look at the cover piece that goes over the radiator. The 91 might have a cut-out for the filler tube. As said, definitely get the bottle as well.

xjmafia

he wants 200 for the radiator i can get mine new for 120

freegdr

unless that radiator is metal nthree core you can get a new one for cheaper,do not stay with the closed system upgrade to the open system 91 and up

xjmafia

i called Advanced Auto and i can get a new one from a 91 for 120

xjmafia

So if i get this from a 91 all i will need is the bottle to add to it? nothing else changes as far as the cooling system goes? any info would be great

freegdr

heres how mine was done https://www.cherokeeforum.com/f2/ren...d-shift-63044/

freegdr

if you heater still works just pipe it straight ,from heater core to motor with new hoses and clamps

Evilpopcorn

If you do get a new one, I'd recommend radiator barn, awesome guys, ordered mine Tuesday, it came in Friday. And it might be worth getting a new all metal one, this is the second radiator I've had to buy, others were plastic, now I switched... $163.55 for my brand new all metal two row CSF radiator. And that includes the shipping.

djb383

Need a new rad cap for the new rad. Aren't there some heater hose plumbing/routing changes necessary along with the old pressure bottle being eliminated? Open style bottle must have the hose running from bottom to the nipple below the rad cap and bottle must have a vented cap (no pressure in bottle).

xjmafia

so whats the advantage of the upgrade?

Bustedknuckle

The 87-90's had a "closed cooling system", basically no radiator cap. The pressure bottle, or overflow bottle was plagued with issues, a small crack in it due to pressure buildup would compromise your systems entire cooling ability. With an open style, you have a radiator cap, which acts like a fail safe in the event of overheating. Plus, it's direct feed into the radiator. Like I said, I swapped mine out with a junkyard one out of a 94, got the coolant overflow bottle and everything for $38. My XJ used to get past redline in less then 15 minutes, now after a full day of wheeling it barely makes it to 210*F.