Esp the experts, esp looking at the last pic, the inside of the collector.

The flow in the collector is supposed to be one of the most important bits and its obviously had lots of work smoothing and porting the collector (not finished yet either), rather than just welded up and left like almost all others.

 

well seeing as no one loves u enough to reply steven, i reckon all the tubes r same length, which is important, so it looks ok upto their, the flange thingy, i dunno....

 

Yeah for a seriouly decent manifold all the tubes need to be exactly the same length. But I must admit that does look good.

Still not sure what bolts up to the flange, cus if its a turbo then whats the second pipe for?

 

External wastegate

 

Tubes being equal length isnt that important for a turbo car really, flow is, but it is equal length too

 

 

PMSL @ Karl

 

 

what do you think steve???????

 

does the wastegate take gases from all cylinders?

no.6 cylinder bend looks a little tight where it leaves the port

and that manifold/flange will crack as there isnt any expension gaps

 

Karl-

Spiky- I dont know, just looks like a pretty manifold to me, thats why im asking what experts think...

Gareth- Cheers, wastegate takes gasses from the flange (tho lil hard to see in that pic) so yes, think 6 looks tight from that camera angles, TBH if look careful i dont think tighter than any others, and what you mean by expansion gaps?

Its not finished, but not sure whats left to do

 

is that a bmw m power straight six???

 

well i dont know if mine is just cause its poorley made but i know a few other peeps woith em but they crack for a past time!


Mine is deffo more hassle than it is worth espically as the standard item is more than enough for my car!

But hey it looks bling!

 

is this for your car steve?

 

the flange shouldnt be one piece, between every cylinder there should be a gap simple to sort, even a hacksaw would do the job

 

Dan, no, itsa Nissan RB26 head n Nissan/Holden RB30 block.

Lewis, if you can explain how i can get a cast manifold to fit the turbo im running and flow whats needed, il use one
Not sure on cracking but know lots of other people with similar manifolds from same people with no issues.
You have trouble Lewis as yours is barely braced so have the weight of manifold, turbo, and some of exhaust pushing on the manifold so nut suprised it breaks! Look at RallyX cars for example, loadsa bracing on their manifolds etc.

Matt, yus

 

Well whoever made it,cant be the same person who fitted it...as having to write "top" on the manifold tells me that he didnt trust the intelligence of the fitter..ROFL

 

how much is it steve?

 

IMA- Its jus trial fitted to a engine to make sure its right, the TOP thing is because of "usualy" have different ex manifold stud positions and easy to get mixed up, and u end up with an upside down manifold, lol

Gareth- Not cheap there, but is here. Thank god for favourable exchange rates

 

mine is cut between cylinders!

the brace is what i was gievn m8 & i am not sure where else i can get another fookin 1 in lol!

i also believe zorst wrap to b a cuase of the crackin so i have left it off this time round!

 

started like this-very BLING



did this on the Dyno


This cured prob- not very BLING



Hope yours is OK.

 

Rod,
What do you expect if you hang a wastegate off it unsupported .

 

1st one that has cracked mike, hope the one u are selling on the site has/will have these changes made

they have been changed now

 

The way the above one has been modded, it will STILL crack .

 

Mike if i had designed the manifold it would have been supported , but Cosworth parts aint exactly to military spec. Manufacture has been told what to do & i believe the design has now changed. The young designers of today dear oh! dear not like the old days

 

how should it be done mike?

 

stop repeating what others said ages ago

 

well time will tell i suppose,

 

Phil,
It needs a V-slot down the middle of the bracing plates.

 

Mike, you just made that up did'nt you!

 

Nope .

This allows the bracket to expand and contract without breaking the welds .

 

Interesting Mike.

 

Karl,
Make sure you drill a hole at the end of the slot to stop it propogating...

Like those old wooden pegs...

 

Could you draw me a nice diagram mike and post it up here please.

 

Karl your have to wait as Harvey is on his tea break

 

 

 

i agree with mike,

it needs some severe stress releeving on the interals and external angles, even the nicely nicely wleded hks ones on the evos crack for fun cos the edge of the welds are stress raisers and when its F hot and cools down, thermal stress causes cracks.

 

What you dont know Karl, is that Mike worked with me on both the Concorde & Tornado projects & Concorde only crashed when Mike left to consentrate on Tubular manifolds. .
Rod

 

Rod, serious?