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Thread: Supercharging a Rangie

  1. #1
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    Supercharging a Rangie

    I have a 89 4dr Range Rover with a 3.5L EFI and Auto. Great car for what it is. I mainly use it for weekend fun, long trips and towing a car trailer to comps and weekend trips with my series II or buggys on it.

    The Rangie Tows well, but I would really like abit more grunt. Thought about putting a 4.6L in it but would have to stuff around with changing the EFI system along with many othere bits and pieces. So I was thinking of getting a supercharger (say off a commodore or similar) and fitting it (make custom bracket and piping) and run around 7- 8 PSI, nothing massive but enough to make towing that much easier. I thought with lowish psi I could keep the stock internals in the motor.

    What do you think? has anyone done this before??

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  3. #3
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    Ironic how they're against supercharging, when they're selling stroker motors isn't it

    Dont believe everything on the interweb

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    stroking and supercharging are two totally different things.

    In my opinion supercharging is ok but the common eaton setups are not well suited to the rover motors and it is for the reasons explained by rpi. Your best off fitting a snail type charger and using the original intake with afew flow enhancements.

    I was looking at this option and only running 5-6psi but i could not get it all sorted out at a price i was prepared to accept.
    Last edited by Grimace; 4th August 2007 at 10:23 AM.

  5. #5
    mcrover Guest
    I wouldnt do it if your not prepared to change the ECU for something programable to get the best out of it.

    Nothing wrong with it but as a recent thread along the same lines pointed out that there is normally a lot of sorting out to be done.

    I think you could do it on a budget if your not expecting a world of power but I dont know if the increase would be equal to cost if you know what I mean.

    Deacons and LRA have both done supercharged rangies so maybe a phone call on what options are available and they could give you a cost, if doing it yourself then work it out mius labour.

  6. #6
    mcrover Guest
    Quote Originally Posted by Grimace View Post
    stroking and supercharging are two totally different things.

    In my opinion supercharging is ok but the common eaton setups are not well suited to the rover motors and it is for the reasons explained by rpi. Your best off fitting a snail type charger and using the original intake with afew flow enhancements.

    I was looking at this option and only running 5-6psi but i could not get it all sorted out at a price i was prepared to accept.

    Only prob with the turbo type ones is that they are only of use higher up in the rev range where the screw type give you boost from the start but not much up high.

    So if the eatons are no good on the rover motors then how come both Deacons and LRA systems are both eaton SC's, and they have got big power out of them with few problems.

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    I was planning on using a stand alone supercharger and keeping the standard air intake. 5 Psi would make towing that much nicer..

    I was planning on doing it as cheap as possible, buy a 2nd hand charger, do all the work myself

    interesting artical....I guess the standard ECU is a limitation/problem. I thought running low PSI would be ok.

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    Quote Originally Posted by Guru036 View Post
    I was planning on using a stand alone supercharger and keeping the standard air intake. 5 Psi would make towing that much nicer..

    I was planning on doing it as cheap as possible, buy a 2nd hand charger, do all the work myself

    interesting artical....I guess the standard ECU is a limitation/problem. I thought running low PSI would be ok.
    This is similar to what i had in mind. In the end I decided to change the cam do the heads, and next ill be looking at a stroked short.

  9. #9
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    As I often say, supercharging is a complex and frustrating business. Top mount blowers on V8's make it almost impossible to design and fit an inlet tract that gives even distribution, & difficult to house a decent intercooler. Using more than 6-8psi boost on petrol engined street cars produces a whole set of problems. you often feel it is two steps forward and one back, or the reverse, when sorting out one of these. Grimace has the right idea for a street engine. The other way is to add a heap of cubic inches with a heart transplant.
    URSUSMAJOR

  10. #10
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    Quote Originally Posted by Grimace View Post
    stroking and supercharging are two totally different things.
    Really? I never would have guessed


    ECU is scrap regardless, stroker of blown

    I know of 2 succesfully blown rover motors (both roots type) and both are on stock internals, wtihout failure and both are driven not very kindly.....despite what all the nay sayers say

    Anyway i'll leave you in the hands of all those that say it can't or shouldn't be done....and all in all your best to leave your motor stock as its all to hard or buy an isuzu and leave it VERRRRRRY slow and N/A because its easy

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