Anyone put a 12 valve in a 99?

[cumminstogetya]

Has anyone put a 12 valve in a 1999? I know that there are many cracked 53 blocks expecially in the 1999, and most people are replacing them with 24 valves. I was wondering what problems I would run into if I was to do this, what outside expenses, and what possible impossibilities. Any info would be helpful. THanks in advance.



John

 

[TradedV-10foraCummins]

There was a '99 that was converted to a 12v on Pier's site a few months ago. http://www.piersdiesel.com/TruckClub/Matts/TruckClub.htm Maybe Piers could fill you in on what the coversion requires.

 

[cumminstogetya]

Thanks for the info. I wonder if they had to buy the 12 valve wiring harnesses or anything like that?

 

[TKingsbury]

Depending on where you live, the smog nazi's might get upset.

Travis. .

 

[Evan A. Beck]

Our '02 shop truck used to be a 24V... Now its a 12V-powered '02, complete with automatic. I had to custom build a wiring harness for it, and there were some other electronics to deal with too. It all works though, including cruise control. No check engine light either.

 

[cumminstogetya]

Evan, that would be cool to see sometime. The reason I am asking is because I know how hard 98 12 valves are getting to find and building one might be more time efficient than finding one.



John

 

[Ol'TrailDog]

What I would think would be even spiffier would be a 12v in a 3G. Get the best of both worlds: brakes, transmission, frame, four doors, steering, suspension + 12v.

 

[Evan A. Beck]

Evan, that would be cool to see sometime. The reason I am asking is because I know how hard 98 12 valves are getting to find and building one might be more time efficient than finding one.



John

1998 12V trucks are some of the most problematic trucks we work on. All sorts of weird half-year problems... I wouldn't own one, just because of all the problems I have had to take care of on customers' trucks.



We want to do a 12V in a 3rd gen next. Should be fairly easy, as we've learned a lot of tricks with our '02 truck.

 

[DKarvwnaris]

Evan, that would be cool to see sometime. The reason I am asking is because I know how hard 98 12 valves are getting to find and building one might be more time efficient than finding one.



John

If you know a good body shop guy or are up to the task, you will be amazed at what can be accomplished if you own a 95 to 97 extended cab cummins already. One of the guys that used to come into the shop I worked at doing conversion found a 99 1/2 ton quad cab with frame damage and blown motor. He swapped the cabs and had a Highway Patrol inspection to verify the cab was a "repair" part. This exempted him from the emissions issues. He pulled the dash section out of his 96 and put it into the 99. I couldn't tell the difference as both cabs were grey interior. It took him two weekends and a few nights during the week to do it. His title reflects both VIN#'s if I remember right. He reused his 96 front clip and cab decals.

Value reflects the 96 not the 99. He is still driving to to this date around town. That is my plan since my cab is getting rough rattling apart these days, but the drivestrain is going strong.