Notice: We request that you don't just set up a new account at this time if you are a previous user. If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.
3.9 heads are near enough to exactly the same as 3.5 heads. You will need extractors for a 3.5 Range rover with square crossmember if you want the pipes to go above it..( which is a good idea)
I recommend a Flowmaster muffler.
reagdrs Philip A
I have a tired 3.5 in my 2dr, but I recently replaced the entire exhaust. I used manifolds from an EFI Disco (not sure what year - I found them by ringing around exhaust places for good sets that they had kept after fitting extractors). These are 4-2, so need twin-pipe drops to suit an 86 Rangie. These I got through Justin C (new from UK I think, probably the most expensive bit). I put the manifolds and drops on and then got the exhaust place to fab me up a new Y-piece. Probably could have just slip jointed the new drops to the old Y-piece but mine was rooted. A little while later (when I could afford it again) I had the same exhaust place do the rest. I got a Berklee straight through muffler plus a Berklee glass packed resonator 'dog', with new tubing. The engine seems to breathe so much freer (definitely revs out better) and I sounds good too. Total cost was: ~$600.
You could go for extractors instead but this way is heaps cheaper and I think thes manifolds are pretty close to being just as good (I think Philip A will agree)
81rangie wrote:You could go for extractors instead but this way is heaps cheaper and I think thes manifolds are pretty close to being just as good (I think Philip A will agree)
Nick
I would also agree
For how much extractors cost, it's worth a bit fiddling around. I have lined up a set of extractors cheap so I have a couple of sets of EFI manifolds if anyone needs sone (no flanges though)
I certainly do agree. In fact I took extractors off my 77 and put injection split manifolds on. I was sick of the slip joint leaking. Good extractors now have flange joints.
Reagrds Philip A
I upgraded my Rangie system to a set of HPC coated extractors and then into a 2 & 3/4 inch single pipe...the muffler bloke said you can't go any bigger with the 3.5V8 as they need back pressure. If I give a boot full when cold, I do get the occasional pop when backing off. Still, overall, it has an awesome sound.
There is just a lukey highflow muffler in the middle.
The extractors made a huge difference to power.
But I have had to replace a flange gasket already. The muffler shop said it was from going through water and the sudden decrease in temperature wrecks the gaskets. Small price to pay
I had the extractors made by a place called Custom Exhaust Systems located in Brisbane...their website is www.cesracing.com.au. They then send the extractors to another company for coating. The coating drops the heat down so much on the V8..
Ben,I think the issue is more whether the exhausts will fit over the crossmember. If you are using a ZF auto, then probably no, if an LT 95 then yes.
But the extractors point a different direction depending on whether over or under, so you have to know where you plan to run the pipes prior to buying the extractors.
regards Philip A
