4-1 mani help/advice needed??? :)

5th January 2010, 19:13

been offered a 4-1 mani and noticed a lot ppl have 4-2-1 so i waswondering weather i should get it or not if its the right price? also it has a dint n the downpipe like where the bend is how will this affect it? bearing n mind mines lowerd 60mm so likely 2 get dinted anywhays lol

5th January 2010, 20:24

Personally I would not buy a damaged used manifold but it would depend on how damaged it really was. It does not matter if its 4-1 or 4-2-1 its really down to how well its designed. If you get a good one such as a GMC or Peugeot Sport item there going to be good. If its some cheap unbranded item off ebay well you tend to get what you pay for.

5th January 2010, 20:33

the only damage to it is on the bend where the dwn pipe connects to the centre section where someones bottemed it out on sumthing think

6th January 2010, 01:17

4-2-1 midrange power increase
4-1 top end increase

on paper anyways

really a 4-2-1 is more common and is suitable for medium powered cars.

When S/Charging or running bodies/cams a 4-1 would be better

6th January 2010, 02:05

Is a janspeed manifold inc sport cat and good for a vtr?

6th January 2010, 02:08

expensive. They are mild steel iirc which isnt great.

Your better off getting a stainless steel manifold which will decat your car. And use an under car cat when you need to get it mot'd