12 Valve 3.0L Montero working on going to single turbo.

[TainterRacing]

The Back ground first. I have been working/playing with turbo 2.6 4g54 for 13 years.

The Montero is a 1997 That i just did a motor swap in. I want to turbo it not to make it fast just so it can tow better.

The Motor has about 30k on it since I rebuilt it. I ported the heads and port matched all the manifolds. Other then that it is all stock.

The Plan put a cheep t3t4 from e-bay on it.
Need to figure how to get the manifolds connected. The rear wheel drive has a y pipe. I want to find out if I have the room to run it like the Fwd setup is. I need to know how far from the back of the block to the farthest point of from the block. I will make headers if i must but I would like to run the stock manifolds if I could.

If I could have any of you try to measure how far off the block that pipe runs over the tranny is that would be a great help.

[Sundance 6g72]

cx racing ebay account is who i got ny ebay turbo on. it still works. i would stick to them for your cheep turbo needs. they also make very nice budget intercooler kits if yoy want to stay cheep in that area. mine works well.



distance between the block and crossover pipe? ill see what i can do.



you should make sure fueling and tuning is taken care of first. im not sure what type of fuel pumps are available to you gm 3800sc injectors can be used for cheep from a junkyard if you want to. i use them. they are high impedence.

---------- Post added at 12:03 AM ---------- Previous post was at 12:02 AM ----------

your lucky you want low end power, stock cams are what you want. we all like to uograde to big cams for our little cars

[Mdoe8]

I would shy away from the ebay turbo and find a nice holset or similar. They are bullet proof and can be had for the same price. You don't need anything big as you're going for low end grunt. Perhaps an hx35 or hx40 would fit the bill. The ebay turbo's have gotten a lot better than they used to be though. If you're set on an ebay turbo, my buddy has a T61 that he's selling very cheap. Used for 8k miles without a hiccup on his supra.

Definitely go with ebay for the intercooler setup. These have been proven many many times over that they are very capable. I myself have used them on two of my 600hp cars.

Also, don't go cheap on the wastegate (if you're going external). Find a used tial or similar. The ebay ones will always eventually freeze up on you which can lead to catosrophic failure.

[Sundance 6g72]

yeah, before you buy the turbo check around for a locally used one or look on the cummins forums and see whats available. turbo dodge guys love holsets so that should make it easy to find one. that was my plan at the time but i got lazy :P

[Mdoe8]

Amen to lazyness

[turbovanman²]

I have an HY35 and HE351VGT for sale,

[Sundance 6g72]

how does one go about setting up a engine to be turbo and make low end power without running out of breath up top?

sequential turbos anyone?

[Mdoe8]

Stock cams, smallish turbo. No need for sequentials. A turbo will still have enough oomph up top if properly sized as well.

[Ondonti]

I have not tried towing yet with my He341 Holset but I think it would be pretty happy with all that extra load. Is this an auto trans? Hilly area? 3.0 doesn't seen to need help towing if you downshift on even very large hills. You do have to beat on the engine up large grades (high rpms) but thats probably safer then low boost and low rpms. That said, I want low rpms, boost, and car towing ability so thats what I went with.

I would megasquirt for optimal towing experience. Timing needs to be carefully controlled when towing, especially with boost. My Spirit with bad headgasket (already leaking combustion slowly for years) blew out completely during my 2nd tow of a car through the 2nd to last mountain pass. I am sure its from knock. I was being very hard on the motor because it was fun.

[Mdoe8]

I was being very hard on the motor because it was fun.

Sounds like fun

[TainterRacing]

The montero is 4475lbs empty weight. It had a DOHC 3.5L in there (200hp) I plan on towing about 3500lbs. I will be doubling the radiator capacity. Adding a 2nd tranny cooler with a fan. I was going to put a 4g54 2.6L 4cly Turbo in there. But I put the 12valve 3.0 as it at lest bolted to the tranny. Was a real pain in the but tho. The power I am looking for is about 60HP+ and about 100Tq+ Is what I am wanting to get. I was thinking boost to be about 6-8psi The montero is 4475lbs empty weight. It had a DOHC 3.5L in there (200hp) I plan on towing about 3500lbs. I will be doubling the radiator capacity. Adding a 2nd tranny cooler with a fan. I was going to put a 4g54 2.6L 4cly Turbo in there. But I put the 12valve 3.0 as it at lest bolted to the tranny. Was a real pain in the but tho. The power I am looking for is about 60HP+ and about 100Tq+ Is what I am wanting to get. I was thinking boost to be about 6-8psi Power band I want is about 2500rpms-4500rpms The motor is 8:9:1 comp now. And yes it is an auto as well. I thought I read some where that the 4G54 valves can be made to work in the 12valve heads. any of you know any thing about that? As for the turning I am not yet sure what I want to do I might just run a MAFT on it and I will be putting on s wide band as well. Thanks for all the help guys and the more I look I think I might just have to make my own headers. I need to keep the pipe very tight to the block. So do you think I can do what I am looking to do or am I going to have this thing eating head gasket.

[Sundance 6g72]

can you run a translator like the dsm guys do?

i think the stock 4g54 valves can be made to work but dont quote me. brent will know for sure.

6-8psi should get you where you need to be. with a somewhat early spooling turbo youl be right in the cams powerband.

tq tends to have a very flat curve and then peak at about 4500rpms or so.



what intake manifold are you using? most of our gains come from running a bigger throttle body and porting our intake along with a big 3inch exhaust. Thats the easiest way to make quick power but you might have a different intake setup to start with. pics?

[TainterRacing]

Here are some pics I have the wiring cleaned up now but you get an idea of what it looks like. I am about 95% sure I can run a MAFT I have the same Mass air plug that they do. I will at frist run a 2.5in to the stock 2.25 In Tell it rust out more than I will run a open 2.5in or 3in. I know I have a diff type of intake mine is just like the 87-91 Mustang 5.0's. Is that your dyno?

[Sundance 6g72]

crazy looking!

where do you plan on running the turbo?

---------- Post added at 10:09 AM ---------- Previous post was at 10:09 AM ----------

yes that is my dynorun with open 3inch exhaust, ported upper intake, 52mm throttle body, stock timing.

[Ondonti]

I would run a 180 degree stat to keep your cooling system ahead of heat increases. I was running a 192 stat when towing because I wanted more heat for the cabin.
I would leave the cams alone and not bother with the 4g54 valves if you are looking for low rpm hp.
For pure towing you might look at a smaller turbo then the Holsets. Those are just starting to kick up at 2000 rpms and don't spool hard until 2500. Extra weight will make it spool lower.

[TainterRacing]

The reson I said any thing about the valves I have lots laying around. I might see if I can get a trashed head to work on putting some of the 4g54 valves in and porting it. As for getting a smaller turbo I am not sure I want to get one thats to small. If I can get boost at 2500 that will be great.

I plan on putting the trubo on the passenger side its hard to tell but there is alot of room there.

[Sundance 6g72]

how would you run both manifolds to the turbo? just curious. its weird seeing a different layout, i wouldnt know where to start.

[TainterRacing]

The driver side manifold I will run it over the back of the tranny and run it in to the turbo. It looks like it will be about 250 to make the headers for it. So I might even looking making it twin turbo. But most of the time TT is going to be a good deal more $ then a single.

[Sundance 6g72]

i dont like the idea of custom twin turbo.. to much of a headache

i wanna see this happen though!

[Ondonti]

Holset would be fine if you are not looking for response but just want boost at 2500. It will just take a second.

The 4g54 valves are longer so you need a reduced base circle cam or some other type of fix.