boosting a RRC - Land Rovers Only

GreatDivide1 · 04-16-2008, 08:23 PM

hey has anybody had any goodluck boosting a 3.9 rover motor????

i want to hear what yall have heard the good the bad and the

ugly.....i want to do a turbo system on my truck but dont know if it is worth all the fab work to not last at all......idea's thought's concern's i want to hear em Don

p76rangie · 04-16-2008, 08:47 PM

I am not sure about Turbo charging, but I have seen a couple supercharged. Below are pictures of a Supercharged 4.0. At 5psi boost it puts out 140kw at the wheels.

p76rangie · 04-16-2008, 08:51 PM

This one appears to be turbo charged.
RangeRovers.net :: View topic - Hello and some pics of my modified Classic.

PriestlyDeacon · 04-17-2008, 04:37 AM

Quote:

Originally Posted by GreatDivide1

hey has anybody had any goodluck boosting a 3.9 rover motor????

i want to hear what yall have heard the good the bad and the

ugly.....i want to do a turbo system on my truck but dont know if it is worth all the fab work to not last at all......idea's thought's concern's i want to hear em Don

What fab work? You'll just need to cut out the part of the hood where the leaf blower's going.

ArmyRover · 04-17-2008, 05:38 AM

As long as you keep the boost down to acceptable levels for the compression of the 3.9, run a intercooler to keep intake temps down and lastly keep boost levels at a level that the fuel management system can compensate for you should be fine.

On carbed 85 mustang I learned some of these lessons the hard way.

One of the hard parts for me is fab work is not my strong point, so I cheated. I found by swapping the stock manifolds left and right only a small bend pipe with plate welded on was needed to attach the turbos and the return routing was not to hard to plumb at that point either.

Intake temps were high but not dangerously so, but a intercooler would have made a drastic improvement for the 5.0

The problem I ran into being young and somewhat in the dark was boost control. The wastegates that came with the turbo's I was using (a pair of turbo's salvaged from a Thunderbird Turbo Coupe) cut off at I want to say +-15 psi. This is where I went wrong. I tried to dial them back a bit but didn't take into mind compression and dial them down far enough. I ended up causing some serious damage in about 3k miles that ended the engines life.

Just think through everything and stay down on the boost. I would guess the engine could safely handle 6-10 psi in stock form. Of course that is given the engine is in solid shape.

After that you have to give thought to the transmission that is sitting behind it and the transfer case. I don't know what they can handle. Something tells me it is not a impressive number though.

We can talk on sunday and I'll give you a complete run down on what I did and what I learned and what happened in the end....

polar · 04-17-2008, 08:08 AM

What is up with the chain theft deterrent?? Bad neighborhood?

The Colonel · 04-17-2008, 04:43 PM

must be a bad neighborhood....lol

BullDogSix · 04-17-2008, 05:45 PM

What year is that dash??...More storage and accessory options.

p76rangie · 04-17-2008, 08:37 PM

Quote:

Originally Posted by BullDogSix

What year is that dash??...More storage and accessory options.

It is a custom built job, not a production dash.

04-16-2008, 08:23 PM	#1 (permalink)
GreatDivide1 Senior Member Join Date: Dec 2007 Location: dover nh Posts: 157 Gallery: 0	boosting a RRC hey has anybody had any goodluck boosting a 3.9 rover motor???? i want to hear what yall have heard the good the bad and the ugly.....i want to do a turbo system on my truck but dont know if it is worth all the fab work to not last at all......idea's thought's concern's i want to hear em Don __________________ 91 G.D.E. project/daily winter driver 93 BMW 325i project/daily summer driver:SOLD: 00 BUELL cyclone custom http://www.snhlr.org/

04-16-2008, 08:47 PM	#2 (permalink)
p76rangie Ian Matthews Join Date: Jan 2006 Location: Melbourne Australia Posts: 1,912 Gallery: 0	I am not sure about Turbo charging, but I have seen a couple supercharged. Below are pictures of a Supercharged 4.0. At 5psi boost it puts out 140kw at the wheels. Attached Thumbnails

04-17-2008, 05:38 AM	#5 (permalink)
ArmyRover Rebuilding Rover Join Date: Sep 2007 Location: NH Posts: 1,730 Gallery: 0	As long as you keep the boost down to acceptable levels for the compression of the 3.9, run a intercooler to keep intake temps down and lastly keep boost levels at a level that the fuel management system can compensate for you should be fine. On carbed 85 mustang I learned some of these lessons the hard way. One of the hard parts for me is fab work is not my strong point, so I cheated. I found by swapping the stock manifolds left and right only a small bend pipe with plate welded on was needed to attach the turbos and the return routing was not to hard to plumb at that point either. Intake temps were high but not dangerously so, but a intercooler would have made a drastic improvement for the 5.0 The problem I ran into being young and somewhat in the dark was boost control. The wastegates that came with the turbo's I was using (a pair of turbo's salvaged from a Thunderbird Turbo Coupe) cut off at I want to say +-15 psi. This is where I went wrong. I tried to dial them back a bit but didn't take into mind compression and dial them down far enough. I ended up causing some serious damage in about 3k miles that ended the engines life. Just think through everything and stay down on the boost. I would guess the engine could safely handle 6-10 psi in stock form. Of course that is given the engine is in solid shape. After that you have to give thought to the transmission that is sitting behind it and the transfer case. I don't know what they can handle. Something tells me it is not a impressive number though. We can talk on sunday and I'll give you a complete run down on what I did and what I learned and what happened in the end.... __________________ "Only two defining forces ever offered to die for you, Jesus Christ and the American G.I. One died for your soul, the other for your freedom." http://snhlr.org/ 91 Range Rover Classic 90 RRC Parts truck 94 Saab gas mileage beater

04-17-2008, 08:08 AM	#6 (permalink)
polar Senior Member Join Date: Apr 2008 Posts: 102 Gallery: 0	What is up with the chain theft deterrent?? Bad neighborhood? Attached Thumbnails

04-17-2008, 04:43 PM	#7 (permalink)
The Colonel Founder: SNHLR.ORG Join Date: Dec 2007 Location: New Hampshire Posts: 236 Gallery: 18	must be a bad neighborhood....lol __________________ Finally got me one of them Land Rovers ClubsLife Is Good

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04-16-2008, 08:51 PM	#3 (permalink)
p76rangie Ian Matthews Join Date: Jan 2006 Location: Melbourne Australia Posts: 1,912 Gallery: 0	This one appears to be turbo charged. RangeRovers.net :: View topic - Hello and some pics of my modified Classic.

04-17-2008, 05:45 PM	#8 (permalink)
BullDogSix RRC Owner in training Join Date: Jan 2008 Location: NW Lower Michigan Posts: 189 Gallery: 2	What year is that dash??...More storage and accessory options. __________________ Support the Troops = Support the Mission Don't say it if you don't mean it. 1994 RRC LWB, 82k miles, 4.2, Cornish Cream/Lightstone Interior, spring converted.

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