LMTV's: Check your fans

[Andyrv6av8r]

It's been stated before on here by many to check and modify your fans if needed on your older LMTV's. I had a friend a couple of weeks ago have his fan go out enroute to a parade 80 miles from his house. The tow bill was 1400 dollars for what could have been a $20 repair beforehand. This is the 3rd fan that I have repaired. Check your fan and if it has allen head bolts holding it on, it needs to be replaced with a newer clutch and fan OR , cheaply modified to prevent failure.
The original setup has a rubber doghnut that allows the fan to spin if needed. This will deteriorate and fail eventually and it will ruin your fan. Best practice is to remove it and install eight 3/16 bolts and nuts in existing holes to eliminate any chance of failure. In my friends case I happen to have a modified fan assembly to replace his bad one.



His fan after the rubber failed.






Modified with the rubber removed and bolts in the existing factory holes.



I use leftover 3/16 aircraft grade bolts and locknuts from my Aircraft Maintenance days.

 

[Ronmar]

Here is what it looks like before the rubber goes

 

[ckouba]

View attachment 853960

Thread drift alert (apologies): That is a gorgeous backdrop!!! Takes me back to an earlier stage of my automotive addictions:

What do you do with it? Guessing by your forum handle, is it a plane motor?

 

[Andyrv6av8r]

Thread drift alert (apologies): That is a gorgeous backdrop!!! Takes me back to an earlier stage of my automotive addictions:

What do you do with it? Guessing by your forum handle, is it a plane motor?

My friend who's fan just crapped out keeps his truck at a shop who specializes in Rotary Racing engines. He thought it would make an unusual backdrop!

 

[wheelspinner]

I have new style clutch / fan sets (take offs) available for anyone who needs this

 

[ckouba]

My friend who's fan just crapped out keeps his truck at a shop who specializes in Rotary Racing engines. He thought it would make an unusual backdrop!

Your friend was right!

They are quirky but super cool. The car in the pic was my 3rd evolution- a 1979 chassis running a bridge-ported 13B with a 2 barrel Dellorto and sewer pipe-sized exhaust. That car was SUPER fun, with the pic being taken at an event in BC on Vancouver Island. Great sport, fun car, cool motor, fantastic people!

Now back to the thread topic....

 

[Ronmar]

I thought that looked like a rotary Had a friend in highschool who was into mazda rotarys, he had RX2’s and 3’s and a pickup. We would open up the restrictor ports in shop class and re-assemble them. They were awesome in all categories, up to and including when they ate themselves

 

[ramdough]

That has 4 rotors though…. Right? Was that a special stacked engine or what did it come out of?

I think the Mazda stock engines only had two and the racing ones had 3…. Always thought stacking a 4 would be awesome.


Sent from my iPhone using Tapatalk

 

[Andyrv6av8r]

That has 4 rotors though…. Right? Was that a special stacked engine or what did it come out of?

I think the Mazda stock engines only had two and the racing ones had 3…. Always thought stacking a 4 would be awesome.


Sent from my iPhone using Tapatalk

Yep, it's 4 rotors. Rarer than hen's teeth! He has several and they are for Road Race Series cars.

 

[Andyrv6av8r]

Here's one with accessories.

 

[ckouba]

Those trumpets are a variable length induction system, which was pretty radical in the late 80's early 90's. The green trumpet would slide in and out of the black tube based on engine RPM and other parameters:

The sonic experience was enormous at full chat:

 

[Third From Texas]

Those trumpets are a variable length induction system, which was pretty radical in the late 80's early 90's. The green trumpet would slide in and out of the black tube based on engine RPM and other parameters:

The sonic experience was enormous at full chat:

Needs LS swap.

So saithe the Internet....

;P

 

[tpiekbp]

Thank you for the great information on the fan assembly Andyrv6av8r and the video Ronmar! I know what I'm doing for fun this weekend.

 

[Godspeed131]

Just checked on mine a few days ago and found it seems to have the newer style fan assy installed. So lucked out on that one.