4G63T conversion

mightymaxin · Post by **mightymaxin** » Mon Feb 12, 2007 10:26 pm

Hello all! I have been reading through the boards trying to take in a all the useful information. I currently have an 88 MM with a G63B and KM132 tranny. I fell in love with the idea of a DOHC turbo power plant under the hood, but I'm still a little sketchy on the details. Basically I bolt on the head, manifolds, sensors, ECU, harness, oil pump cover, pulleys, and plumbing from a 1G DSM onto my block. Or is that way too over-simplified?

carguyf545 · Post by **carguyf545** » Sat Feb 17, 2007 12:48 am

i thought it was that simple, i told my old man it was that. he said yeah right. well to make a long story short. he said i told you so, hopefuly the car will run this weekend. the swap could be real simple, maybe i made it hard on myself.

mightymaxin · Post by **mightymaxin** » Sat Feb 17, 2007 2:28 am

So, where did you have problems during the swap? I thought as long as the head came from a 6 bolt narrow block everything was the same except for some minor mods to the pump cover and timing belt stuff. I am in no rush for this project, I want to get all the facts before undertaking anything. I read that the only difference between the 4G63T and G63B is a slightly different bore and stroke, and the timing belt arrangement is different.

Old Colt · Post by **Old Colt** » Sat Feb 17, 2007 8:12 am

The bore and stroke are the same, it is the previous G52 that has the differant bore.
You should just put the turbo engine in, not just a head swap.

mightymaxin · Post by **mightymaxin** » Sat Feb 17, 2007 10:49 am

Would any one else agree that just getting the 4G63T engine, ecu, and harness is better than swapping parts onto the G63B? For those that live in CA what does the smog po po say about the swap?

Post by **DJpowerHaus** » Sat Feb 17, 2007 11:01 am

The first half of the swap is pretty simple. If you have all the parts you can bolt everything together in a matter of minutes and have it bolted in the car within a day.

That's where it stops being simple. You'll need to do some fabrication on the intake manifold. You'll need to fab up IC pipes, water pipes, exhaust pipes, water and oil lines for the turbo, modify your wiring harness, modify any clutch lines, etc. At many points you'll need to get to things on the back of the head and you'll need to pull the engine in and out.

Lets just say the clock STARTS when you bolt the engine in with the transmission for the first time. We've all seen posts "4G63 swap almost running" with an engine bolted in with nothing hooked up.

Old Colt · Post by **Old Colt** » Sat Feb 17, 2007 11:45 am

Correct,
Definition of a simple swap.
5-10 hours to get the engine in the chassis.
50-100 hours to make it run and drive.

mightymaxin · Post by **mightymaxin** » Sat Feb 17, 2007 2:57 pm

From my understanding the real work is in all the little bits and wiring, right? The more I read into this the more I find that this swap might not be for me. Thanks to all he shared insight. Who knows I might change my mind later if I still have the truck.

peregrine · Post by **peregrine** » Sun Feb 18, 2007 12:32 am

mightymaxin wrote:From my understanding the real work is in all the little bits and wiring, right? The more I read into this the more I find that this swap might not be for me. Thanks to all he shared insight. Who knows I might change my mind later if I still have the truck.

yeah if you give up just reading about it dont try to start this project

its not for the weak willed

Post by **DJpowerHaus** » Sun Feb 18, 2007 10:54 am

Over the next few months I'm going to try and change some of this. You'll have to spend some $$ on it though. I think the time saved will more than make up for the expenditure.

mightymaxin · Post by **mightymaxin** » Sun Feb 18, 2007 1:08 pm

I'm not giving up because I don't want to hassle with things, in fact thats what I like about projects. I'm choosing to put this project off to the side because of the amount of time it will take to do. Right, now I'm busy with school and my free time is very limited.

Bill Hincher · Post by **Bill Hincher** » Sun Feb 18, 2007 1:12 pm

your better off , Mightymax, its much better that you put the numbers together and made a good decision.
with time this group can pool its talent and make the swap much easier

4g63mightymax · Post by **4g63mightymax** » Sun Feb 18, 2007 4:35 pm

Old Colt wrote:Correct,
Definition of a simple swap.
5-10 hours to get the engine in the chassis.
50-100 hours to make it run and drive.

I agree 100% and would also like to add:
5 hours of pulling the engine + trans back out of the chassis once you realize that bashing in the firewall with a hammer was a BAD idea.
20-30 hours to make the firewall presentable again.
1000 hours of wishing you had just done it right the first time.

Let us know when you are ready!

-Jeremy