Getting more power out of stock 95 lr def 90 gas motor? - Defender Source
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  #1  
Old December 2nd, 2013, 06:32 PM
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George Zingus Jimmie Padg
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Getting more power out of stock 95 lr def 90 gas motor?

Any suggestions on how to get more power out of a stock 1995 LR defender gas motor with out doing a tdi conversion?
Thanks
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  #2  
Old December 2nd, 2013, 06:43 PM
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Tdi would have less power. A 4.6 swap would be a good place to start.
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  #3  
Old December 2nd, 2013, 06:53 PM
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George Zingus Jimmie Padg
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Thanks guys, but I was wondering if there are any upgrades, rarer than a swap. Fuel pump, throttle body spacer, or jets
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  #4  
Old December 2nd, 2013, 07:12 PM
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homemade turbo?
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  #5  
Old December 2nd, 2013, 07:13 PM
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carbs, turbo charging?
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  #6  
Old December 2nd, 2013, 07:21 PM
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Whats the mileage and condition of the engine you've got? Checked plugs, compression etc?
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A friend of mine runs a land rover / range rover specialty repair shop. Based on his experience, they are capable of stopping anywhere, anytime, at any cost.

I don't know about the brakes, only their unreliability.
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  #7  
Old December 2nd, 2013, 07:23 PM
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None of that bolt on stuff will get you anywhere and will only reduce the drivability and reliability.

You can get good improvements from a 3.9L but it would be with a new cam, bumped compression, and definitely worked heads and an ECU reprogram (which is not cheap).

If you are looking for lots of power you are barking up the wrong tree...
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  #8  
Old December 2nd, 2013, 08:18 PM
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dual t3 flanges mig welded to hacksawed stock exhaust headers. two t3/t4 hybrid turbos, upped fueling using SAFC or Rising Rate FPR, open downpipe, some tape over the CEL...time to take a few from the notebooks of tuners...
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Old December 2nd, 2013, 08:46 PM
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Changing to a blueprinted and slightly tweaked 4.6 motor will give a roughly 25% increase in usable output. That is about as much as the rest of the brakes and drivetrain can take without beefing them up too. We do a fair number of those conversions and are able to get even more power but costs rise sharply once you go beyond that level.

There are no easy bolt on improvements that will materially improve power in a truck like yours. Turbocharging or supercharging is beyond the expertise of most owners. Free flow exhausts are illegal in most of the USA, as are straight pipe in place of the cat.
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  #10  
Old December 2nd, 2013, 08:52 PM
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Quote:
Originally Posted by sonoronos View Post
dual t3 flanges mig welded to hacksawed stock exhaust headers. two t3/t4 hybrid turbos, upped fueling using SAFC or Rising Rate FPR, open downpipe, some tape over the CEL...time to take a few from the notebooks of tuners...
Large FMIC...
screw SAFC, go straight stand alone engine mgmt...

Oh wait, we're shining a turd here.

4.6 crank/rods, 4.0 pistons, port/polish/cam and call it good.
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  #11  
Old December 2nd, 2013, 10:13 PM
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Ray speaketh my language!
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  #12  
Old December 2nd, 2013, 10:16 PM
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Originally Posted by sonoronos View Post
Ray speaketh my language!
Closet forced induction ricer at heart...what can I say?
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  #13  
Old December 2nd, 2013, 10:43 PM
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The cam upgrade to the 50230 made a big difference in my 3.9.
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  #14  
Old December 2nd, 2013, 11:54 PM
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Quote:
Originally Posted by Ray_G View Post
Closet forced induction ricer at heart...what can I say?
I remember that MR2 of yours . . .
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  #15  
Old December 3rd, 2013, 01:58 AM
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And we can thank Mercury Marine to for this boat anchor.
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A friend of mine runs a land rover / range rover specialty repair shop. Based on his experience, they are capable of stopping anywhere, anytime, at any cost.

I don't know about the brakes, only their unreliability.
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  #16  
Old December 3rd, 2013, 07:14 AM
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Drive a 2.5NA and you will realize you have plenty of power

I would make sure the engine is up to snuff and is running properly. Guys with way more knowledge than me have given a list of items to check like cams, timing, exhaust. etc.

Same with the tranny - a smoother shifting one will make it feel faster/smoother/better.

Are you running stock tires? If not, going to 3.7 or 4.1s can help.

Or Colin Chapman it - pull off any crap you don't need and make it lighter. I swore my 90 felt faster when I had the front bumper/winch/light off it when I was waiting for a Rockware.
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  #17  
Old December 3rd, 2013, 07:27 AM
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A general tune up will help if it has been neglected. You could try advancing the timing or a Magnaflow or Borla exhaust. No real gains to be made without cams head work and forced induction. The crower cam mentiioned above helps marginally, there are a number of cam options out there. Tdi's are pigs, less the later computer controlled variants.
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  #18  
Old December 3rd, 2013, 09:24 AM
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No one brought up ignition, but switching off the old Lucas dizzy and coil certainly helps. I have no numbers, but at the very least the power band is much smoother.
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  #19  
Old December 3rd, 2013, 09:33 AM
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how many mallory distributor threads are there?
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  #20  
Old December 3rd, 2013, 09:38 AM
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I don't have a mallory. Nor would I fault mallory for people being unable to install them properly.
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