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smudge67999

Active Member

• Nov 19, 2014

• #1

hi i have just purchased a 1988 3.5efi classic. it has been convertyed to run on gas and some clown took away the fuel tank. plus disconnected the ecu under drivers seat so to get the thing started it has to be turned over fast and up she fires. now what i need is a picture of the relays under drivers seat next to ecu as all mine are missing. plus do thease have cats as i dont see none in the exhaust system. plus cant belive how small the down pipe diameter of the downpipes are compared to the 3.9.so on that basis can i fit 3.9v8 down pipes onto my exsisting 3.5 manifolds or are the manifolds diffrent as should get some more power having the 3.9v8 down pipes on been much bigger diameter. any help is good thanx

 

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Oldfogey

Active Member

• Nov 20, 2014

• #2

Hi.

I used to have an '89 3.5, which I am sure didn't have a cat(s).

Can't help on the relays, sorry.

As for the downpipes, I am pretty sure the manifolds are different, but an exhaust shop should be able to look up the sizes and tell you. I am not sure that it would be a good idea to fit bigger pipes anyway - doesn't it need a certain amount of back pressure to run smoothly?

My experience of exhausts on the 3.5 is that I was always replacing bits - and the garage hated them because there were so many different bits to try and line up and joints to seal. You might want to consider stainless, as it might be economic in the long run.

 

cooltide

sheep fancier

• Nov 20, 2014

• #3

If someone has ripped it apart it was likely knackered.
I'd be looking for a disco rrc hotwire 3.5 complete efi kit or 4 barrel carb.
Or just run on gas

 

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smudge67999

Active Member

• Nov 20, 2014

• #4

hi i have just brought some stainless steel 4branch and a custom made y piece second hand 80.00 .so i think this dothe job.yes ur right i looked at the rangerover in the breakers today and it dont have cats and it runs a green tune resistor for none cats.cheers for the reply

 

lorri789

Well-Known Member

• Nov 20, 2014

• #5

Mine is a 92 and has no cats. Mine is also a 3.9, so I don't know if the relays are in the same place, I'll take a pic tomorrow if I remember.

or go to page 70 here:http://www.landroverweb.com/Pdf-files/Manuals/Range-Rover-Manual-Fuel-Injection.pdf

 

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Oldfogey

Active Member

• Nov 21, 2014

• #6

That looks a good deal on the exhaust bits.

 

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smudge67999

Active Member

• Nov 21, 2014

• #7

yeah i thought that he had them on ebay but he ended it for me at that price