tr4a exhaust on a tr4

[lynchpin]

Hi all

I apologise in advance as I know this question has been covered but I have searched under various topics and can't find the absolute answer, I am replacing the rusty exhaust on my 4 and decided to go for a stainless system, I have aquired a standard refurbished 4a manifold, TR shop have a pheonix sport system  for a 4a including the downpipe and 2 into 1 adapter, they are unsure this will fit on a 4 and suggest I question the greater minds on this forum.

Will this system fit, will it pass through the centre cruciform section on the chassis with enough clearance, albeit in a straight line unlike the original and then kick over to avoid the diff', they have checked out the differences on their systems in stock hoping I could order one for a 4 without the expensive manifold and cut down the length of the 1st pipe to account for the angle of the 4a manifold but the diameter is different?   

  Cheers Phil.

Edited June 26, 2020 by lynchpin
spelling mistakes

[Malbaby]

I started with a twin outlet stock factory 4A manifold, which is a semi extractor anyway.

Cut off the old twin exhaust pipe flange. Welded a 2 into 1 collector onto the flange and then ran a custom made single SS exhaust pipe to aftermarket muffler.

Effective, easily made and economical.

[lynchpin]

Hi

I am looking for something off the shelf to fit as opposed to cutting and welding as I have no access to or the skills to weld, I do have limited use of a friends local garage and ramp so working under the car isn't a problem as long as everything fits first time and the car isn't left imobile.

I remember on a previous question someone mentioned they had a complete Phoenix system including the manifold that they had removed from I think a TR3, I wonder if you still have it??

          Cheers Phil..

[adriantr4]

Hello 

I plan to do something similar: I have acquired a TR4a exhaust manifold and the twin down pipe. I need suggestions to join this to my existing system at the cross point in the chassis of my '4. A brief look on-line shows a generic Y piece - if I bought this could I get an exhaust shop to weld it to a pipe length if I specify it? Or would it be easier to buy the TR4a front Y piece & cut it? Or ....?

Anyone have a 4a Y piece that I could have for some cash?

Thanks, Adrian 

 

 

[BlueTR3A-5EKT]

10 hours ago, adriantr4 said:

Hello 

I plan to do something similar: I have acquired a TR4a exhaust manifold and the twin down pipe. I need suggestions to join this to my existing system at the cross point in the chassis of my '4. A brief look on-line shows a generic Y piece - if I bought this could I get an exhaust shop to weld it to a pipe length if I specify it? Or would it be easier to buy the TR4a front Y piece & cut it? Or ....?

Anyone have a 4a Y piece that I could have for some cash?

Thanks, Adrian 

 

 

I think I have a new mild steel one up in the rafters of the garage.     I will touch it and confirm if you are interested.

Harmo number SU 1358.  Item 27 

 

Edited February 8 by BlueTR3A-5EKT

[BlueTR3A-5EKT]

12 hours ago, adriantr4 said:

Hello 

I plan to do something similar: I have acquired a TR4a exhaust manifold and the twin down pipe. I need suggestions to join this to my existing system at the cross point in the chassis of my '4. A brief look on-line shows a generic Y piece - if I bought this could I get an exhaust shop to weld it to a pipe length if I specify it? Or would it be easier to buy the TR4a front Y piece & cut it? Or ....?

Anyone have a 4a Y piece that I could have for some cash?

Thanks, Adrian 

 

 

I think I have a new mild steel one up in the rafters of the garage.     I will touch it and confirm if you are interested.

Harmo number SU 1358.

 

Yes I have it.

New unused, bit scruffy but not rusted through 

see photo for its length.   By the looks of it about 2” has been cut from the rear end.

Yours for £25 including UK mainland postage.

pm me your address if you want it.

Edited February 8 by BlueTR3A-5EKT
Added photo

[adriantr4]

Hi. Yes that's exactly it. 

Shortly after my last post it occurred to me I have part of the solution, my TR4 downpipe that has the slight jog to connect to the next section at the X in the chassis. So, all I need to do is graft the Y section to my original pipe. Easy! (I hope!)

My thanks to BlueTR3A-5EKT. Will pm soon.

Cheers, Adrian 

 

 

 

[BlueTR3A-5EKT]

Something like this might be a help.

https://www.buycarparts.co.uk/fa1/2969338?tb_prm=Shopping%2FPKW%2FUK_350591613&bshp=1&msclkid=81fc47a38ed619b707202e2b12b9ee47&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping%2FPKW%2FUK&utm_term=4588605628821619&utm_content=Ad group %231
 

 

[adriantr4]

Good idea, thanks.

Adrian 

[Chris Hale]

Adrian

Speak to Maniflow in Salisbury https://www.maniflow.co.uk/?view=page&page=1 they will make you exactly the pipe you need to your spec. 

[adriantr4]

Thanks, understood. Got my Y pipe courtesy BlueTR3A-5EKT. I'm currently finishing the bodywork so there will be a pause.

Adrian