Viscous Heater Delete Kits Available

WWDiesel · **Posted:** Thu Dec 01, 2022 2:15 pm

Mglass419 wrote:

Would like to purchase one asap plz and ty. Dm me or hmu.

Responded to your messages

WWDiesel · **Posted:** Sat Dec 31, 2022 2:06 am

New Viscous Heater Delete Kits back in stock ready for immediate shipment if anyone needs one.

Mglass419 · **Posted:** Thu Jan 05, 2023 10:37 am

This viscous heater delete kit I ordered arrived promptly and went together without a hitch. The package is very well put together, A manual comes with it (in color on top of that, a very nice touch) you can tell some serious thought went into it to cover all bases for even the most unfamiliar with wrenching on their jeep. If you still have questions, WWDiesel is quick to answer and will break it down to make it as simple to understand as possible. He's that guy. The one that knows every little thing about the CRD you could possibly want to know. Ask me how i know. lol. Jokes aside though, I would highly recommend this to anyone looking to get rid of that leaky siv that is the viscous heater. It's a better product then what you can find elsewhere out there, and I wouldn't hesitate to do business with him again. And no I'm not trying to stroke any egos. But his input has spanned out on multiple fronts with questions and issues I've come across with this vehicle. N not jus ones revolving around this delete kit he manufactures and sells. That's hard to find these days and really shows a test of his character. So by all means drop the man a DM. I'm sure i'll be bothering him again in the future. You should too. Lol. Jk. Give him a shout, I'm sure he'll get back with ya.

Thanks.

Mickey G
Toledo OH

Shepy · **Joined:** Sat Jan 07, 2023 8:41 pm **Posts:** 1

Hello,
Do you have any kits available?
Thank you
Shepy

WWDiesel · **Posted:** Sat Jan 07, 2023 10:53 pm

Shepy wrote:

Hello,
Do you have any kits available?
Thank you
Shepy

I have Viscous Heater Delete Kits in stock ready for immediate shipment.
email or PM me to order.

DieselJeepLuvr · **Posted:** Mon Jan 23, 2023 9:39 pm

I may be interested in one if I knew what it cost and if anyone who has installed one in a cold climate has any complaints regarding slow warm up.

WWDiesel · **Posted:** Tue Jan 24, 2023 1:54 am

Sent you a PM.
It eliminates a possible clutch pulley & bearing failure device along with eliminating coolant leaking from the unit. Also removes a HP drag on the engine when the clutch is engaged.
And, the viscous heater is no longer available new by Mopar, it has been discontinued, so the only replacement option is finding a good used unit if it fails. The Viscous Heater does not provide a lot of actual heat input into the cabin heater.
I have sold kits to some customers in the northern states and a few in Canada and so far none have complained of having cabin heat issues.
I reside in the south where the lowest temps we see in winter is in the teens and having NO Viscous Heater has never caused any cabin heat issues. My Jeep's heater heats up very quickly within a mile or two of driving.

Maybe some of those owners in cold climates can respond to your question as they certainly can speak better on the subject than I.

CaptainDean · **Joined:** Thu Oct 05, 2017 2:22 am **Posts:** 716

Has anyone replaced the Viscous Heater with a vacuum pump? I'd like to run my vacuum systems with a pump that is outside of the crankcase. Can you imagine getting a leak in your power brake hose or diaphragm and blowing your front main seal?

Dean.

WWDiesel · **Posted:** Mon Mar 27, 2023 3:21 am

I have never heard or read of anyone having a failed vacuum pump. (so far)
Can that vacuum pump you shown be use as a air compressor.
A small belt driven air compressor would be very nice to have in place of the Viscous Heater with a switch to engage the clutch when you need on board air. :idea:

CaptainDean · **Joined:** Thu Oct 05, 2017 2:22 am **Posts:** 716

WWDiesel,

I was not implying that the internal vacuum pump might fail, I was expressing I'd like to get the vacuum pump's exhaust out of the crankcase. The possible fault might be a failed hose or diaphragm that would allow a large volume of air to get vacuumed into the crankcase -- possibly more than the crankcase ventilation system could handle. The final fault might be another cause of pushing the front main seal out.

In a quest for a failure having the least consequences, I'd rather see the crankcase ventilation oil separator pushed out of the valve cover than the front main seal pushed out of place. I'd rather have a "fail safe" than a "fail catastrophe". Unfortunately the crankcase ventilation oil separator is bolted in, and the front main seal is only pressed is -- probably with some gasket sealer to help glue it in. (I may remove the bolts in the crankcase ventilation oil separator and hold it in with gasket sealer instead of installing an external vacuum pump.)

I do, however, see some practical and handy uses for your idea of a small air compressor in place of the viscous heater. Have you explored that avenue? You could offer those for sale along with your viscous heater replacement idler pulleys.

Dean.

layback40 · **Posted:** Thu Mar 30, 2023 3:28 pm

CaptainDean wrote:

WWDiesel,

I was not implying that the internal vacuum pump might fail, I was expressing I'd like to get the vacuum pump's exhaust out of the crankcase. The possible fault might be a failed hose or diaphragm that would allow a large volume of air to get vacuumed into the crankcase -- possibly more than the crankcase ventilation system could handle. The final fault might be another cause of pushing the front main seal out.

In a quest for a failure having the least consequences, I'd rather see the crankcase ventilation oil separator pushed out of the valve cover than the front main seal pushed out of place. I'd rather have a "fail safe" than a "fail catastrophe". Unfortunately the crankcase ventilation oil separator is bolted in, and the front main seal is only pressed is -- probably with some gasket sealer to help glue it in. (I may remove the bolts in the crankcase ventilation oil separator and hold it in with gasket sealer instead of installing an external vacuum pump.)

I do, however, see some practical and handy uses for your idea of a small air compressor in place of the viscous heater. Have you explored that avenue? You could offer those for sale along with your viscous heater replacement idler pulleys.

Dean.

The diesel XJ's (export only) up to about 1998 had a vac pump on the back of the alternator. There are many other diesels like this. The internal vac pump was seen as improvement. My XJ (2000 MY) has the internal one. Never been a problem. Both are vane type vac pumps.
How much blow-by are you seeing?
A part from a vac leak or driving with your left foot resting on the brake peddle, its unlikely that vac pump is the problem. I have seen failed brake booster diaphragms causing vac problems.

CaptainDean · **Joined:** Thu Oct 05, 2017 2:22 am **Posts:** 716

layback40,

I'm not sure how much blow by my engine is making, but I just changed the oil 2 weeks ago and the crankcase is already full of jet black oil now. There is a lot of oddness going on and I'm not certain I can blame it all on a kinked breather hose.

When I get this one back on the road I'll have a better idea about the condition of the engine. I know how to check for excessive blow by fumes. This is a newly rebuilt engine with only about 1000 miles on it, so it's possible the rings are still settling in. I'm hoping the bearings survived this mess, but if not, I'll rebuild the other engine and do a swap later.
I've never had to spend so much time on an engine. It's exhausting. :dizzy:

Dean.

WWDiesel · **Posted:** Sat Aug 12, 2023 4:38 pm

Viscous Heater Elimination Kits are back in stock if you need one!

PM or email if interested.

mzak88 · **Joined:** Sat Jan 06, 2024 2:37 pm **Posts:** 1

WWDiesel wrote:

If you would like to remove and eliminate your worn out or leaking Viscous Heater and / or plumbing, or you just want to get rid of the VH?
I have developed a viscous heater elimination kit using strong and lightweight billet aluminum bar stock, a Gates idler pulley, and a grade 8 mounting bolt.
Direct bolt on replacement for the viscous heater, uses original VH mounting bolts and reuses stock serpentine belt. No other parts required!
Heater hose rerouting & modification is covered in written install procedures which comes with kit.
I have tested it on my personal vehicle now for a couple of months and it functions perfectly with no issues.

Pictures:

How could I purchase one of these from you?

WWDiesel · **Posted:** Fri May 24, 2024 11:00 pm

Sent you an email with the purchase information.

Turboman280 · **Posted:** Wed Jul 31, 2024 6:10 pm

So that's what that thing is. Thought it was the AC compressor at first glance.

Probably don't need that here in the Arizona Desert.

I'll put the delete on my to do list.

BigDarren · **Posted:** Mon Sep 16, 2024 6:42 pm

Are kits still available? If so, what is the current pricing?

Thanks.

WWDiesel · **Posted:** Mon Sep 16, 2024 10:23 pm

BigDarren wrote:

Are kits still available? If so, what is the current pricing?
Thanks.

Yes, kits are available,
Sent you the info on how to purchase in an email and a PM on this forum.
Check your messages....
ww

WWDiesel · **Posted:** Sat Sep 20, 2025 2:27 pm

WWDiesel wrote:

Replace your obsolete, worn out, defective, or leaking Viscous Heater with a Bypass Replacement Kit from WWDiesel.
Reuses OEM serpentine belt, no modifications or additional parts required to install delete/bypass assembly, simple less than 30-minute easy bolt on installation only requiring simple hand tools to install.
Comes complete with written & fully illustrated installation procedures.

Shipment is normally within 24 hrs. of purchase by USPS Priority Mail during normal business hours.
No Sunday or Holiday shipments.
A USPS tracking number will be provided when kit is shipped.

PM or email if you would like to order a Viscous Heater Delete/Bypass Kit.

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