autospecialists cvh exh manifold
#82
PassionFord Post Troll
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Paul, it just seems strange to me that you have the fabrication skills to build a whole manifold but not to construct a simple 2-1 merge collector? If you were to fabricate them in house it would save you a fortune.
#83
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
cheers paul
#84
Advanced PassionFord User
Join Date: Dec 2005
Location: under the bonnet
Posts: 1,566
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://passionford.com/forum/images/icons/icon1.gif)
yes mate its the only bit on the manifolds that are mild due to heat expansion , stainless is very good at holding heat but not dissapating heat and when bolted to the cylinder head can cause extra heat within the cylinder head as the exhaust heat should be in the headers. and again cost is an issue , how much are you paying for a 13mm thick zetec flange?
cheers paul![Top](https://passionford.com/forum/images/smilies/smile011.gif)
cheers paul
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
#85
PassionFord Post Troll
![Default](https://passionford.com/forum/images/icons/icon1.gif)
i probably could build them to be honest but i work 6 days a week and dont have the time as i said lances are top quality items with flared ends and i havent got all the equipment to do things like that at the moment i will carry on buying them from ojz , you got any pics of yours mate
cheers paul
cheers paul
#87
competant bodger
iTrader: (2)
![Default](https://passionford.com/forum/images/icons/icon1.gif)
to zetaboost boy .i stand corrected everyone has there opinions and yes your manifolds look very good and obviously work well if capable of taking 500+bhp but you have to remember some cossies make more than that with standard cast manifolds so isnt definite proof that your manifolds are excellent have you run test of your manifold versus a standard one on the same engine? as for pricing i make my own bends, collectors and flanges so save 100's over what your paying. please dont think i am slating you here as you are obviously skilled. and i am sticking to my guns on primary sizes as ive felt the reduction in lag with bigger ones, as for cracking t304 is prone to it but doesnt mean it will happen, cracking usually occurs once in the engine bay when the heat cant escape properly or when using heat wrap, however usually if they crack once then are re-welded cracking usually doesnt happen again
#88
PassionFord Post Troll
![Default](https://passionford.com/forum/images/icons/icon1.gif)
The cracking is caused by two things.
The first one is fatigue. People run these manifolds (worse are over the gearbox) with no support to take the weight of the turbo. The turbo is bouncing up and down on the end of the manifold and eventually the stainless will fatigue and crack.
The second problem is expansion. People make the mistake of constraining long runners so that they cannot expand in the direction they wish. If the runner is constrained it will crack.
Paul, your manifolds do look nice and obviously function well. However i do think you could improve the design of the collector. I know why you/area six have gone for a cone. It is easy to fabricate and easy to get the runners to line up with. The problem with it is it creates a sudden large change in volume. This will cause a pressure drop, turbulance, eddy currents etc that will ultimatly effect flow.
The first one is fatigue. People run these manifolds (worse are over the gearbox) with no support to take the weight of the turbo. The turbo is bouncing up and down on the end of the manifold and eventually the stainless will fatigue and crack.
The second problem is expansion. People make the mistake of constraining long runners so that they cannot expand in the direction they wish. If the runner is constrained it will crack.
Paul, your manifolds do look nice and obviously function well. However i do think you could improve the design of the collector. I know why you/area six have gone for a cone. It is easy to fabricate and easy to get the runners to line up with. The problem with it is it creates a sudden large change in volume. This will cause a pressure drop, turbulance, eddy currents etc that will ultimatly effect flow.
#90
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
to zetaboost boy .i stand corrected everyone has there opinions and yes your manifolds look very good and obviously work well if capable of taking 500+bhp but you have to remember some cossies make more than that with standard cast manifolds so isnt definite proof that your manifolds are excellent have you run test of your manifold versus a standard one on the same engine? as for pricing i make my own bends, collectors and flanges so save 100's over what your paying. please dont think i am slating you here as you are obviously skilled. and i am sticking to my guns on primary sizes as ive felt the reduction in lag with bigger ones, as for cracking t304 is prone to it but doesnt mean it will happen, cracking usually occurs once in the engine bay when the heat cant escape properly or when using heat wrap, however usually if they crack once then are re-welded cracking usually doesnt happen again
ive never said that my manifolds are the best thing going what i will say is that its been dyno tested and is rated at 500+ bhp and thats all i do say as i defo dont want to give false promises and lead people on . the second thing is that my engine was the most powerful zetec turbo engine (now dan arrowsmith , well done mate) on a road going car so i dont think anyone will superseed that unless they have serious money and until that time comes then these manifolds will be adequate.
if you make mandrel bends etc then like i said mate get someones engine and offer to build them a couple of manifolds for cheap and do some testing at let us know how it goes .
good luck
cheers paul
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
#91
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
The cracking is caused by two things.
The first one is fatigue. People run these manifolds (worse are over the gearbox) with no support to take the weight of the turbo. The turbo is bouncing up and down on the end of the manifold and eventually the stainless will fatigue and crack.
The second problem is expansion. People make the mistake of constraining long runners so that they cannot expand in the direction they wish. If the runner is constrained it will crack.
Paul, your manifolds do look nice and obviously function well. However i do think you could improve the design of the collector. I know why you/area six have gone for a cone. It is easy to fabricate and easy to get the runners to line up with. The problem with it is it creates a sudden large change in volume. This will cause a pressure drop, turbulance, eddy currents etc that will ultimatly effect flow.
The first one is fatigue. People run these manifolds (worse are over the gearbox) with no support to take the weight of the turbo. The turbo is bouncing up and down on the end of the manifold and eventually the stainless will fatigue and crack.
The second problem is expansion. People make the mistake of constraining long runners so that they cannot expand in the direction they wish. If the runner is constrained it will crack.
Paul, your manifolds do look nice and obviously function well. However i do think you could improve the design of the collector. I know why you/area six have gone for a cone. It is easy to fabricate and easy to get the runners to line up with. The problem with it is it creates a sudden large change in volume. This will cause a pressure drop, turbulance, eddy currents etc that will ultimatly effect flow.
as for the cone we do not build them , we buy them as they are spun stainless steel which is very strong and durable
cheers paul
#95
PassionFord Post Troll
iTrader: (3)
Join Date: Jan 2005
Location: Bristol/Bath
Posts: 2,568
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Does nms do ANYTHING at all to the standard manifolds when using them on their big power cars?? Just seems strange that they don't use anything fancy as money won't be an issue at that level of tune.
#103
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
ok then rick , sunnys zetec turbo , paul johnsons zetec turbo , sids zvh turbo , and every other over the gearbox type that ian has built over the last 10 years without one reported crack or failure , i use the same pipes , same components , and the same company so i dont think we will have any probs and if we do i will be happy to repair any faults. as i know p johnson well and seen him do many track days driving flat of on full boost (30 psi) and easily one of the most aggressive drivers ive ever seen and no reported problems then i think i will stick by what ive said. again ian has developed these products over a 10 year period and have been on the most powerful cars of there kind so i know these are provern products even if you dont !
#104
PassionFord Post Troll
#105
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
iam on about where i get my bends etc as iam a customer of ians and a very good friend and over the years hes told me and gave his advice on wheres the best place to buy bits/components etc as i wanted to build my own manifold . no iam not in business with ian as ian is no longer trading , but i would say iam a handy guy and like building things so i over time ive gained some knowledge and experience and like to help friends out , iam a full time electrical control panel engineer/builder so i surpose my field is wiring / fabrication etc thats why i make all ians pectel looms (well used too) . i earn Ł50 from making the looms as i like to help like minded people get parts that little bit cheaper and i can say that they are very well made (if i dont say so myself) which in turn has brought the cost of the harness down by Ł100.
Last edited by zetaboostboy522bhp; 23-06-2009 at 04:17 PM.
#107
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
nice one mate , let us know when you want one but keep an eye out for the new 4-1 merge collector manifold being built over the next month
#109
PassionFord Post Whore!!
![Default](https://passionford.com/forum/images/icons/icon1.gif)
the only one ive ever saw that did was the AVA one! looked the dogs but was very expensive and they dont do them any more.
#111
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
heres the start of the new 4-1 merge collector equal lenght manifold , just tacked together and when finished i will post some more piccys
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics475.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics476.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics474.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics475.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics476.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics474.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics477.jpg)
#112
Too many posts.. I need a life!!
Join Date: Aug 2006
Location: conwy
Posts: 541
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://passionford.com/forum/images/icons/icon1.gif)
yes all my manifolds are handbuilt buy me
iam on about where i get my bends etc as iam a customer of ians and a very good friend and over the years hes told me and gave his advice on wheres the best place to buy bits/components etc as i wanted to build my own manifold . no iam not in business with ian as ian is no longer trading , but i would say iam a handy guy and like building things so i over time ive gained some knowledge and experience and like to help friends out , iam a full time electrical control panel engineer/builder so i surpose my field is wiring / fabrication etc thats why i make all ians pectel looms (well used too) . i earn Ł50 from making the looms as i like to help like minded people get parts that little bit cheaper and i can say that they are very well made (if i dont say so myself) which in turn has brought the cost of the harness down by Ł100.
iam on about where i get my bends etc as iam a customer of ians and a very good friend and over the years hes told me and gave his advice on wheres the best place to buy bits/components etc as i wanted to build my own manifold . no iam not in business with ian as ian is no longer trading , but i would say iam a handy guy and like building things so i over time ive gained some knowledge and experience and like to help friends out , iam a full time electrical control panel engineer/builder so i surpose my field is wiring / fabrication etc thats why i make all ians pectel looms (well used too) . i earn Ł50 from making the looms as i like to help like minded people get parts that little bit cheaper and i can say that they are very well made (if i dont say so myself) which in turn has brought the cost of the harness down by Ł100.
#113
Advanced PassionFord User
Join Date: Dec 2005
Location: under the bonnet
Posts: 1,566
Likes: 0
Received 0 Likes
on
0 Posts
#115
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics249.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics255.jpg)
they should look something like this if you take your time
cheers paul
Last edited by zetaboostboy522bhp; 13-07-2009 at 10:41 PM.
#116
Advanced PassionFord User
Join Date: Dec 2005
Location: under the bonnet
Posts: 1,566
Likes: 0
Received 0 Likes
on
0 Posts
#117
Advanced PassionFord User
#118
Advanced PassionFord User
Join Date: Dec 2005
Location: under the bonnet
Posts: 1,566
Likes: 0
Received 0 Likes
on
0 Posts
#119
Advanced PassionFord User
![Default](https://passionford.com/forum/images/icons/icon1.gif)
heres a quick update now 3 have been built with the merge collector option
luca's new manifold
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics498.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics505.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/018.jpg)
and 2 other manifolds ,one for a mk6 with a silver top zetec
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics533.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics532.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics531.jpg)
and one for a mk3 fiesta zetec turbo
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics528.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics522.jpg)
luca's new manifold
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics498.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics505.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/018.jpg)
and 2 other manifolds ,one for a mk6 with a silver top zetec
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics533.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics532.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics531.jpg)
and one for a mk3 fiesta zetec turbo
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics528.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics522.jpg)
![](http://i457.photobucket.com/albums/qq300/ZETABOOSTBOY522BHP/paulpics529.jpg)