I finished my 4739 install today and thought I would post a description and pics for anyone that was interested.



The hood release had to be staightened and rebent to raise it out of the way. On the drivers side there was a protrusion from the back of the header panell that needed to come off. I used the pass side OEM cooler mount with the drivers side cooler clamp to secure the bypass. The top was mounted by using the supplied straps bent 90 degrees, cut and bolted to the header panel with a rubber spacer made from a disassembeld exhaust hanger. The bottom bolted directly with 1" spacers made from some 3/8 tubing I had laying around. The fins are really easy to bend and I bent several. I tried to straighten them, but likely made it worse.

It was more difficult than I would have imagined as there is really very little to bolt to.

I am also quite lousy at fabrication as I lack the imagination necessary to see what the outcome until it is in front of me...

I am happy with the outcome, however.

Aaron

 

Looks good. What did that cooler run you?

Also how did your autometer piller work out?
I am at the order point and was wondering?

 

$153 shipped from dieselsite.com. I cheaper other rplaces but when shipping was added, it came out to more. Some sellers wanted 25-30 bucks to ship. DS only wanted 11 bucks.

Aaron

 

Looks good. I installed the 4739 a month ago and love it. It dropped my temps by 40-50 when pulling. I'm sure you'll be pleased

I spent most of the time fabricating the brackets as well.

 

Oops, I forgot to answer the second part. I bought my gauges from eBay without senders and with a Autometer SD pod. I sold the pod on PSN? and bought a glowshift pod to mount he gauges in. I should have bought an Autometer as there was a lot of work getting the GS to fit. The Autometer gauges installed easily using the radio adapter harness to wire into for switched 12v+, illumination and ground. The map and tranny senders were easy to install, while the pyro was a little more difficult as the manifold had to be drilled. It was in no way hard as the manifold drilled easy and tapped easy, but it did need to be done. I would have saved money if I had bought a new Autometer with the correct pod and senders.

I might have been able to flush my stock cooler and saved some coin, but I poked a hole in it trying to remove it. I like the idea of a cold weather bypass as my commute is short and I think it will help my tranny get up to temp. Before my fluid ran through the cooler 100% of the time and it barely got to 150 before I was at work. I hope it comes up quicker now. The true test will come when I hook up to my trailer and approach warp.

Aaron

 

Here are the autometers. I had to throw a map over the windshield to get the picture to come out. The pod came out okay,. but there was a lot of workk getting it pulled into shape and positioned right.

Aaron

 

Nice job! Can't give ya reps though, need to spread the love.

One question though, Did you keep the cooler in the radiator too? It will help get the trans up to temp faster.
BTW: That's the same one I'm running...best mod I've done IMO.

 

Looks good. I am going to order these-
http://www.puredieselpower.com/catal...ice-p-144.html

Thanks fro the pic.
Rocky

 

I kept the cooler in the radiator to serve as a preheater. The bypass is located after the rad cooler and prior to the 4739. I considered this one carefully, even after reading the Hummer forums where they talk about failed rad coolers. I am currently weighing the benefits of a remote trans filter and whether or not it wuld impose a flow restriction. It would look BA behind the grill.


Aaron

 

http://www.supermotors.net/clubs/for...ll_7/index.php

 

This one is not bad at all.
http://www.timskelton.com/lightning/...er_install.htm

 

If you have any doubt about the flow of the filter you could increase the line size from the trans out to the coolers from 5/16 to 3/8.
I usually put a MagneFine filter in line right after a rebuild. I remove it after the first fluid flush.

 

Great info and pics, Aaron. Reps sent.

 

Thanks!!!

Aaron

 

I really like the idea of a trans oil filter though.
I wish there was a way to know we were not killing flow.