Turbo YJ project - Page 3 - Great Lakes 4x4. The largest offroad forum in the Midwest

Go Back   Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Rig Builds and Pics
GL4x4 Live! GL4x4 Casino

Rig Builds and Pics Introduce your rig or post a buildup here.

greatlakes4x4.com is the premier Great Lakes 4x4 Forum on the internet. Registered Users do not see the above ads.
Search
Reply
 
Thread Tools Search this Thread
Old February 15th, 2008, 07:46 AM   #41
Rob the plumber
Licensed master plumber
 
Rob the plumber's Avatar
 
Join Date: 06-14-06
Location: New Baltimore, Michigan
Posts: 5,778
iTrader: (34)
Mentioned: 2 Post(s)
Default

Quote:
Originally Posted by MuddyPaws View Post
You could easily switch over to a 2.5 bar MAP for turbos.
I don't think it is as easy as just swapping the MAP sensor. All Maps, regardless of pressure rating give a 0-5 volt signal back to the ECM. A standard MAP sensor will feedback 5 volts at 0 vacuum, and a 2 bar MAP will show 5 volts at 14.7 psi.

So I think if I installed a 2 bar MAP with no other modifications it would run too lean. The ECM would be basically tricked into thinking it has half the load that it really does. Maybe I could double the injector size to fuel it adequately at WOT, but I think it might make it run too rich at idle, or just throw a check engine light because the ECM would be seeing half the voltage it normally sees at idle.

I started it up yesterday. My Ebay intercooler was sent to the wrong person so I am stuck waiting for that still. It started, idled fine, and had no oil, coolant, or exhaust leaks. I got to watch the turbo blade spin fast when I winged the throttle. :)
I am waiting for the intercooler and BOV to come in the mail, and I still have to plumb in the FMU.
I am still undecided on how I want to plumb the air intake. I see most of the turbo Jeeps have an open element filter under the hood, right off the turbo. I don't like the idea of sucking water into the engine and turbo, so I thought of plumbing the air intake with 2.5" pipe to the factory airbox, or using a TJ airbox since it will make the run much shorter.
Rob the plumber is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old February 19th, 2008, 12:26 PM   #42
Rob the plumber
Licensed master plumber
 
Rob the plumber's Avatar
 
Join Date: 06-14-06
Location: New Baltimore, Michigan
Posts: 5,778
iTrader: (34)
Mentioned: 2 Post(s)
Default

It's alive and running. I took it for a ride in the subdivision today. Now I can have the flexpipe removed and the hot side hard piped. It seems to run perfect. It starts and idles like it is stock, has no studder or stumble when transitioning into boost. It even makes about 5 psi as soon as you lean into the throttle a bit. At a very low rpm too, just off idle.
It still has winter grade 87 octane in the tank, so I did not get on the gas too much. I'll do some WOT testing after I get some good fuel in it. I might pick up a wideband too to make sure it is safe.
I left the stock airbox in place for now because I might use it. I also ordered a TJ airbox too to see how that works. I don't really want to suck water up in that open element air filter. I also tried installing a check valve in line with the MAP sensor, but the one I bought from Grainger would not work. It vacuum locks the line to the sensor for some reason. The check valves made for this have a small bleed orifice in them for a reason I guess. It takes boost fine without one anyway, with no check engine light.
I also installed a new set of plugs that are one range colder and gapped at .030.

Seat of the pants is pretty bad ass for a 2.5L. It actually feels stronger than my old 4.0L at part throttle. The turbo makes a nice sssSSSSSS!!!! when it starts to build a little boost.
I am still waiting for my intercooler and some silicone fittings to replace the Fernco and the stock intake piping too.




Rob the plumber is offline   Reply With Quote
Old February 19th, 2008, 12:29 PM   #43
99XJJEEP
Senior Member
 
99XJJEEP's Avatar
 
Join Date: 07-17-07
Location: ROSEVILLE, MI
Posts: 146
iTrader: (1)
Mentioned: 0 Post(s)
Default

Detenation and blown head gaskets.
99XJJEEP is offline   Reply With Quote
Old February 19th, 2008, 01:17 PM   #44
Rob the plumber
Licensed master plumber
 
Rob the plumber's Avatar
 
Join Date: 06-14-06
Location: New Baltimore, Michigan
Posts: 5,778
iTrader: (34)
Mentioned: 2 Post(s)
Default

Quote:
Originally Posted by 99XJJEEP View Post
Detenation and blown head gaskets.

With not enough fuel, and too much spark, detonation can certainly pop head gaskets and break pistons. I am hoping to avoid that.

Last edited by Rob the plumber; February 19th, 2008 at 01:25 PM.
Rob the plumber is offline   Reply With Quote
Old February 19th, 2008, 01:41 PM   #45
99XJJEEP
Senior Member
 
99XJJEEP's Avatar
 
Join Date: 07-17-07
Location: ROSEVILLE, MI
Posts: 146
iTrader: (1)
Mentioned: 0 Post(s)
Default

I use to be into Turbo Buick's. Had an 87 T-Type and 89 Turbo Trans Am. Seen many blown headgaskets and holes in pistons from fellow owners turning up their boost and not having big enough injectors. I was running 20 pounds of boost with alcohol injection with zero degrees of knock. Would like to see her run when she is done. How many miles are on the engine right now?
99XJJEEP is offline   Reply With Quote
Old February 19th, 2008, 04:22 PM   #46
jared
Can't Worry About It
 
jared's Avatar
 
Join Date: 10-30-06
Location: Riverview Mi
Posts: 1,068
iTrader: (10)
Mentioned: 0 Post(s)
Default

pretty sweet man. i need to find a turbo for my 2.4 now.
jared is offline   Reply With Quote
Old February 19th, 2008, 04:24 PM   #47
clarkstoncracker
lol
 
clarkstoncracker's Avatar
 
Join Date: 11-03-05
Location: OC - MI
Posts: 42,732
iTrader: (40)
Mentioned: 146 Post(s)
Send a message via AIM to clarkstoncracker
Default

please tell me it sounds like this:

YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
__________________
clarkstoncracker is offline   Reply With Quote
Old February 19th, 2008, 07:44 PM   #48
TJontherox
Mall Rated
 
TJontherox's Avatar
 
Join Date: 06-14-06
Location: Sterling Hgts, MI
Posts: 1,486
iTrader: (8)
Mentioned: 0 Post(s)
Send a message via Yahoo to TJontherox
Default

I would be really impressed if you could make the turbo whine like this. :tonka:

http://www.youtube.com/watch?v=DKJ-nn_wnvc It really sing at about 1:17


Cool project by the way.

Last edited by TJontherox; February 19th, 2008 at 07:47 PM.
TJontherox is offline   Reply With Quote
Old February 19th, 2008, 08:00 PM   #49
Rob the plumber
Licensed master plumber
 
Rob the plumber's Avatar
 
Join Date: 06-14-06
Location: New Baltimore, Michigan
Posts: 5,778
iTrader: (34)
Mentioned: 2 Post(s)
Default

CC, That is pretty much exactly what it sounds like. It should be neat in the summer with the top and doors off.
Rob the plumber is offline   Reply With Quote
Old February 19th, 2008, 08:17 PM   #50
Rob the plumber
Licensed master plumber
 
Rob the plumber's Avatar
 
Join Date: 06-14-06
Location: New Baltimore, Michigan
Posts: 5,778
iTrader: (34)
Mentioned: 2 Post(s)
Default

Quote:
Originally Posted by 99XJJEEP View Post
I use to be into Turbo Buick's. Had an 87 T-Type and 89 Turbo Trans Am. Seen many blown headgaskets and holes in pistons from fellow owners turning up their boost and not having big enough injectors. I was running 20 pounds of boost with alcohol injection with zero degrees of knock. Would like to see her run when she is done. How many miles are on the engine right now?
I've had a bunch of GLH Omni's and a Conquest back in the day, as well as a blower on about every Mustang i've owned. I too learned the hard lessons of turning the wick up on an untuned forced induction car. I am unsure of the mileage on the engine, but it is a 2.5L that still has a non-oil soaked air filter and great oil pressure. I think it is still pretty healthy.
Rob the plumber is offline   Reply With Quote
Old February 19th, 2008, 08:18 PM   #51
Rob the plumber
Licensed master plumber
 
Rob the plumber's Avatar
 
Join Date: 06-14-06
Location: New Baltimore, Michigan
Posts: 5,778
iTrader: (34)
Mentioned: 2 Post(s)
Default

Quote:
Originally Posted by 99XJJEEP View Post
I use to be into Turbo Buick's. Had an 87 T-Type and 89 Turbo Trans Am. Seen many blown headgaskets and holes in pistons from fellow owners turning up their boost and not having big enough injectors. I was running 20 pounds of boost with alcohol injection with zero degrees of knock. Would like to see her run when she is done. How many miles are on the engine right now?
I've had a bunch of GLH Omni's and a Conquest back in the day, as well as a blower on about every Mustang i've owned. I too learned the hard lessons of turning the wick up on an untuned forced induction car. I am unsure of the mileage on the engine, but it is a 2.5L that still has a non-oil soaked air filter and great oil pressure. I think it is still pretty healthy.

The 1989 TTA is probably my mostest favoritist car in the whole wide world.
Rob the plumber is offline   Reply With Quote
Old February 19th, 2008, 11:59 PM   #52
01explorerrick
Member
 
01explorerrick's Avatar
 
Join Date: 03-19-07
Location: traverse city, mi
Posts: 56
iTrader: (0)
Mentioned: 0 Post(s)
Default

recirculate the bov..i know it sounds cool and all but i will tend to fall on it face..do you have a boost controller on it im assuming you do? if not put one on and set it no higher than 6lbs on stock internals...wrap the turbine housing in heat wrap that thing is gonna get HOT and its kinda close to the hood...all and all tho its a good cheap install...
01explorerrick is offline   Reply With Quote
Old February 20th, 2008, 11:21 AM   #53
Rob the plumber
Licensed master plumber
 
Rob the plumber's Avatar
 
Join Date: 06-14-06
Location: New Baltimore, Michigan
Posts: 5,778
iTrader: (34)
Mentioned: 2 Post(s)
Default

I don't think I nned to recirculate the BOV considering it is speed density. If it were a mass air motor the BOV would be releasing air that has already been metered, causing a rich stumble when it goes off. Don't boost controllers just bleed off pressure to the wastegate to increase pressure? I think the wastegate spring is what dictates the minimum boost pressure. I am going to put some compressed air to the wastegate actuator today to verify what pressure it opens. I don't want it any higher than 6-7 psi.

I used to run 20 psi on my 1988 Conquest. That was a neat little car.
Rob the plumber is offline   Reply With Quote
Old February 20th, 2008, 01:20 PM   #54
01explorerrick
Member
 
01explorerrick's Avatar
 
Join Date: 03-19-07
Location: traverse city, mi
Posts: 56
iTrader: (0)
Mentioned: 0 Post(s)
Default

what is the turbo you are using and what car did i come off of? do you know what lb spring is in the wastgate? the only problem with straight plumbing the vacuum line from the charged side directly to the actuator is the wastegate will start to open before you reach your desired max boost, this increases lag alot even tho you dont notice it..say you have a 8lb spring which would be uncommon in a turbo that size..if the pic shows correctly..(pic could make it seem bigger) the wastegate could start to open in as little as say 4lbs..which might not be a huge deal if you were doing this on a car for top speed but being 4x4 and im sure you gonna wheel it you want a fast boost response as low on the rpms as possible..so if you were to put in a manual controller you could dial in the wastegate to try to keep it closed until you reach your max boost which would lower the rpms on where you would reach it
01explorerrick is offline   Reply With Quote
Old February 20th, 2008, 01:24 PM   #55
01explorerrick
Member
 
01explorerrick's Avatar
 
Join Date: 03-19-07
Location: traverse city, mi
Posts: 56
iTrader: (0)
Mentioned: 0 Post(s)
Default

oh and i had a dumb moment there..no you dont have to recirc it then...for some reason i was read the posts and saw something about a maf and thought you were gonna out in a maf...which would be dumb...considering most ppl who run cars that have mafs switch to either a map or an charged side maf..aka the gm translator for the ls1 sensor for like a dsm..if you have a maf before the turbo you would have to run really rich at idle so it would make up for the boost....
01explorerrick is offline   Reply With Quote
Old February 20th, 2008, 09:41 PM   #56
Rob the plumber
Licensed master plumber
 
Rob the plumber's Avatar
 
Join Date: 06-14-06
Location: New Baltimore, Michigan
Posts: 5,778
iTrader: (34)
Mentioned: 2 Post(s)
Default

So it is better to get the vacuum signal for the wastegate from manifold vacuum?
I am not sure what vehicle the turbo came from. It was an Ebay special. The guy said it was a T3/T4 hybrid.
Rob the plumber is offline   Reply With Quote
Old February 20th, 2008, 10:53 PM   #57
hosejockey4506
Visiting Admin
 
hosejockey4506's Avatar
 
Join Date: 11-05-05
Location: fenton
Posts: 8,826
iTrader: (43)
Mentioned: 6 Post(s)
Default

that thing is 200 percent bad dude
hosejockey4506 is offline   Reply With Quote
Old March 20th, 2008, 12:52 PM   #58
Rob the plumber
Licensed master plumber
 
Rob the plumber's Avatar
 
Join Date: 06-14-06
Location: New Baltimore, Michigan
Posts: 5,778
iTrader: (34)
Mentioned: 2 Post(s)
Default

Just about done. I have been driving it daily. It runs as smooth as a stocker too. I hardpiped the hot side, added an intercooler from a Saab. It boogies pretty good. It now easily cruises down the freeway, and I can even pass people too. :) I am still going to wrap the hotpipes back up and add an MSD box to pull timing. It would also be nice to have the intercooler in the FRONT of the radiator, but where it's at is better than not having one at all. I still need a couple silicone couplings to replace the Fernco's too.



Rob the plumber is offline   Reply With Quote
Old March 20th, 2008, 12:59 PM   #59
Plato2k5
In Da Faaaaaace!!!
 
Plato2k5's Avatar
 
Join Date: 12-25-05
Location: WMU Kzoo Mi / Livonia, MI
Posts: 5,445
iTrader: (17)
Mentioned: 1 Post(s)
Send a message via AIM to Plato2k5
Default

very nice work. Now we need some video of this thing kicking some ricers ass
Plato2k5 is offline   Reply With Quote
Old March 20th, 2008, 01:29 PM   #60
jeepfreak81
81 inches of fun
 
jeepfreak81's Avatar
 
Join Date: 11-10-05
Location: Lennon, Mi
Posts: 12,348
iTrader: (23)
Mentioned: 0 Post(s)
Send a message via AIM to jeepfreak81 Send a message via MSN to jeepfreak81 Send a message via Yahoo to jeepfreak81
Default

If you don't mind, out of curiosity how much time/cash do you have invested, seems pretty straightforward and medium-dollar for someone wanting some more oomph.
jeepfreak81 is offline   Reply With Quote
Reply
Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Rig Builds and Pics

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 03:57 PM.


Powered by: vBulletin, Copyright 2000 - 2012, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Page generated in 0.30758 seconds with 81 queries