ACT Sports manifold and cats
Discussion
I am still trying to persude myself to buy the ACT sports manifolds with twin sports cats. Both my manifolds leaked where the 4 tubes go into 1. I changed these for a set i bought off a Pistonheader last year. These leaked even more! So, I know many of you out there have these on their car, what do you think? Money well spent? Performance benefits?
And no, I cant afford CliveF's amazing creations!
And no, I cant afford CliveF's amazing creations!
I'll let you know in a about a week - mine are ordered
Similar problems to you - I've had 2 sets - the first set I decatted then realised they were blowing like crazy all over the place. The second set bought on a whim from a breakers yard was even worse. I've bitten the bullet and gone for it. I figure it can't be any worse that what I had before and they look pretty nice too.
Similar problems to you - I've had 2 sets - the first set I decatted then realised they were blowing like crazy all over the place. The second set bought on a whim from a breakers yard was even worse. I've bitten the bullet and gone for it. I figure it can't be any worse that what I had before and they look pretty nice too.
I may be missing the point here but if you simply have a hole where the pipes join, would it not be a case of popping along to the local exhaust fabricator / metalworking company / fix everything from rusty minis to lawn mowers country garage and slipping a tenner in the appropriate back pocket to have a dob of weld placed on the hole(s)
In reply the the above questions:
The welding needs to be done from the inside of the manifold. This means cutting the thing open, welding a delicate area inside and then welding back up again. This is a popular method.
Using a tube, one end to your ear and the other end as a probe you can find where the manifolds are leaking with the engine running. Sounds like a tapping. With the manifolds off you can pour water into the area where the 4 tubes go into one and observe with a mirror and torch whether water enters into the manifold. This only possible with precats removed.
Jon.
The welding needs to be done from the inside of the manifold. This means cutting the thing open, welding a delicate area inside and then welding back up again. This is a popular method.
Using a tube, one end to your ear and the other end as a probe you can find where the manifolds are leaking with the engine running. Sounds like a tapping. With the manifolds off you can pour water into the area where the 4 tubes go into one and observe with a mirror and torch whether water enters into the manifold. This only possible with precats removed.
Jon.
Overhere said:
Out of all the things I've done to my car, ACT manifolds along with the induction has been the best investment so far, the car breathes much better, sounds better and runs better.
Nooooooooooooooooooooooooo. Just made the decision to repair old ones! Does the breathing and sound have anything to do with the ACT system not having the cats in?Well they're fitted and they sound great.
Full size image here
The lambda sensors are just temp wired in - got new ones to go in with out the connectors. Fitting them was easy - except for a pulled thread in one of the heads :-( Helicoiled it and it's fine now
Car is going for it's mot next week so can't really try it out until then - but just idling and blipping the throttle - sounds good - slightly louder but a much deeper and fuller sound than the stock setup. The exhausts seal really well at all the junctions I only had to add a little sealer the the bottom of the y-piece where the upper section goes into the final pipe.
(one thing to note - they started out silver but they have turned an slight gold colour when they heated up)
Full size image here
The lambda sensors are just temp wired in - got new ones to go in with out the connectors. Fitting them was easy - except for a pulled thread in one of the heads :-( Helicoiled it and it's fine now
Car is going for it's mot next week so can't really try it out until then - but just idling and blipping the throttle - sounds good - slightly louder but a much deeper and fuller sound than the stock setup. The exhausts seal really well at all the junctions I only had to add a little sealer the the bottom of the y-piece where the upper section goes into the final pipe.
(one thing to note - they started out silver but they have turned an slight gold colour when they heated up)
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