Act performance manifolds group buy

[NilsP]

ridds said:

I think the originals are stainless just a lesser grade than 304.

The flanges are monkey metal though. Welds will last if you brace them properly when welding up.

Yes but I'm trying to sell here

[Byker28i]

ridds said:

I think the originals are stainless just a lesser grade than 304.

The flanges are monkey metal though. Welds will last if you brace them properly when welding up.

Mine weren't. Mild steel, rusty, lots of cracks

[Byker28i]

jackwibble said:

I fitted some of the ACT one piece manifolds when I had my 4.7 upgrade done good quality stuff not sure about any performance gains as they just copy the standard items, if you want a performance upgrade you have to get the mega bucks multi piece ACT manifolds.

Well, mine didn't copy the originals, mine are tuned length from each exhaust port, huge amounts of twists and turns.
http://www.actproducts.co.uk/wp-content/uploads/20...

[Tanguero]

Byker28i said:

ridds said:

I think the originals are stainless just a lesser grade than 304.

The flanges are monkey metal though. Welds will last if you brace them properly when welding up.

Mine weren't. Mild steel, rusty, lots of cracks

Mine were stainless tube (304 at a guess) but the flanges were steel plate. The problem with the welds was that they had been shoddily MIGed with mild steel wire between stainless tube sections! The weld filler was corroding badly and was the weak point that cracked. That was the bits where the weld bead was complete and not gappy or porous!

I ground out all the old welds and re did them with stainless wire. How they last time will tell.

[jackwibble]

Byker28i said:

Well, mine didn't copy the originals, mine are tuned length from each exhaust port, huge amounts of twists and turns.
http://www.actproducts.co.uk/wp-content/uploads/20...

Ok a bit twister but no performance increase on the standard TVR ones!
Not knocking them as they are way better quality and life time guarantee

[Byker28i]

jackwibble said:

Ok a bit twister but no performance increase on the standard TVR ones!
Not knocking them as they are way better quality and life time guarantee

Interesting, different characteristics of the engines perhaps?

[NilsP]

Tanguero said:

Mine were stainless tube (304 at a guess) but the flanges were steel plate. The problem with the welds was that they had been shoddily MIGed with mild steel wire between stainless tube sections! The weld filler was corroding badly and was the weak point that cracked. That was the bits where the weld bead was complete and not gappy or porous!

I ground out all the old welds and re did them with stainless wire. How they last time will tell.

Maybe you should buy spare ones for when they go hehe

[Tanguero]

NilsP said:

Tanguero said:

Mine were stainless tube (304 at a guess) but the flanges were steel plate. The problem with the welds was that they had been shoddily MIGed with mild steel wire between stainless tube sections! The weld filler was corroding badly and was the weak point that cracked. That was the bits where the weld bead was complete and not gappy or porous!

I ground out all the old welds and re did them with stainless wire. How they last time will tell.

Maybe you should buy spare ones for when they go hehe

I would love to but I just paid for a 4.7....

[HarryW]

jackwibble said:

Byker28i said:

Well, mine didn't copy the originals, mine are tuned length from each exhaust port, huge amounts of twists and turns.
http://www.actproducts.co.uk/wp-content/uploads/20...

Ok a bit twister but no performance increase on the standard TVR ones!
Not knocking them as they are way better quality and life time guarantee

Do you know there are no gains first hand though, or just asserting it? Just twister? They are better length matched, optimised diameter and blended junctions. Look at standard again and then look at these.
I have used his manifolds on two types of TVR, RV8 and AJP8 and believe they added both times. He sells these as performance manifolds and has back to back independent Hub dyno results that gave + 11hp. Not knocking your post but unless you have something to the contrary to post up, otherwise I'll assume despite your statement you are actually knocking them.

[Byker28i]

Harry I saw 20bhp gain from cracked manifolds to these manifolds on my car. Joo wasn't happy after mapping at 361 as he thought it was sapping his efforts. Manifolds swapped out and it was almost spot on where joo said it would get.

[NilsP]

Byker28i said:

Harry I saw 20bhp gain from cracked manifolds to these manifolds on my car. Joo wasn't happy after mapping at 361 as he thought it was sapping his efforts. Manifolds swapped out and it was almost spot on where joo said it would get.

Will be visiting Joolz some time soon as well
These manifolds and the short induction kit has got to be worth some extra horses no?

[FarmyardPants]

Byker28i said:

Well, mine didn't copy the originals, mine are tuned length from each exhaust port, huge amounts of twists and turns.
http://www.actproducts.co.uk/wp-content/uploads/20...

Are the ones in the pic the same as this group buy? They do look nice

Sadly a bit skint atm but might go for it next time round

[NilsP]

Coming up to the last day guys.
You can put that present for the missus on hold.
They're worth sleeping on the couch for a day or two

[spitfire4v8]

HarryW said:

jackwibble said:

Byker28i said:

Well, mine didn't copy the originals, mine are tuned length from each exhaust port, huge amounts of twists and turns.
http://www.actproducts.co.uk/wp-content/uploads/20...

Ok a bit twister but no performance increase on the standard TVR ones!
Not knocking them as they are way better quality and life time guarantee

Do you know there are no gains first hand though, or just asserting it? Just twister? They are better length matched, optimised diameter and blended junctions. Look at standard again and then look at these.
I have used his manifolds on two types of TVR, RV8 and AJP8 and believe they added both times. He sells these as performance manifolds and has back to back independent Hub dyno results that gave + 11hp. Not knocking your post but unless you have something to the contrary to post up, otherwise I'll assume despite your statement you are actually knocking them.

I think there's some confusion .. jackwibble has the ACT stainless replacement of the standard manifolds, not the performance version being discussed in this thread ..

[HarryW]

spitfire4v8 said:

HarryW said:

jackwibble said:

Byker28i said:

Well, mine didn't copy the originals, mine are tuned length from each exhaust port, huge amounts of twists and turns.
http://www.actproducts.co.uk/wp-content/uploads/20...

Ok a bit twister but no performance increase on the standard TVR ones!
Not knocking them as they are way better quality and life time guarantee

Do you know there are no gains first hand though, or just asserting it? Just twister? They are better length matched, optimised diameter and blended junctions. Look at standard again and then look at these.
I have used his manifolds on two types of TVR, RV8 and AJP8 and believe they added both times. He sells these as performance manifolds and has back to back independent Hub dyno results that gave + 11hp. Not knocking your post but unless you have something to the contrary to post up, otherwise I'll assume despite your statement you are actually knocking them.

I think there's some confusion .. jackwibble has the ACT stainless replacement of the standard manifolds, not the performance version being discussed in this thread ..

I thought that after I posted Joolz, as he originally posted he had the direct replacements, in which case it's a fair comment. The last post above was about the performance ones which is where Jack obviously got mixed up. Fair call, no malice.

[NilsP]

spitfire4v8 said:

I think there's some confusion .. jackwibble has the ACT stainless replacement of the standard manifolds, not the performance version being discussed in this thread ..

Hi Joo,

Quick question...
I tried to order your short induction kit from Ebay
But I couldn't because my country wasn't listed for shipping.
I'd like to fit them already after I have these manifolds. (but they have to go to get ceramic coated first)
So when I come over you don't have to waste time fitting them.
I assume it won't hurt driving from Belgium to your shop with the generic chip?
And do you still sell the cool chip?

Thanks!

[jackwibble]

I did state my were the 1 piece copy of the standard items and NOT the multi piece performance items some people don't read posts correctly! Namely me Apologies for any confusion caused still like em and they are quality items just couldn't justify the pounds per BHP gained on the posh ones.

Edited by jackwibble on Friday 22 August 18:58

[Supateg]

Spoken like a true Yorkshireman.

I'm having the same dilemma at the moment, I think I need to be more impulsive!
Or I just cannot be bothered to weld up the cracks and spend ages port matching then coating if their going to crack again.

I will carry on pondering, tempted buy the possibility of a group buy!

[NilsP]

Supateg said:

Spoken like a true Yorkshireman.

I'm having the same dilemma at the moment, I think I need to be more impulsive!
Or I just cannot be bothered to weld up the cracks and spend ages port matching then coating if their going to crack again.

I will carry on pondering, tempted buy the possibility of a group buy!

well I'll keep this group buy open until tomorrow 2pm
After that I'm going just to order mine from ACT

[jackwibble]

Supateg said:

Spoken like a true Yorkshireman.

I'm having the same dilemma at the moment, I think I need to be more impulsive!
Or I just cannot be bothered to weld up the cracks and spend ages port matching then coating if their going to crack again.

I will carry on pondering, tempted buy the possibility of a group buy!

Yep short arms and deep pockets!