Thinking of doing my own uppipe.What inner diameter and material thickness do you recommend ?
Thanks !

 

you will need to provide a full spec of turbo, engine, headers ect but personally for the sake of £139 you can get one of harvey's trick pipes already wrapped and flowed to your spec

 

Engine : EJ20G Closed Deck (1993 JDM WRX)
Turbo : Mitsubishi TD05-16G
Headers : Stock JDM WRX headers
139 pounds is a lot of money for a pipe o_O

 

I can provide VIN if needed...

 

£139 is not a lot of money at all, the up pipe is responsible for the spooling of the turbo so if you think saving a few will help you are wrong as it will most probs end up ruining the way your car spools and drives, i think the id is 43mm for the tdo5.

 

With respect to the OP, perhaps Bulgarian wages with repect to goods' prices (esp UK goods/duty/import tax yada yada) isn't that great?

Just a thought...???

If that's not the case, then I agree with addi.

 

ohh pant's,,, just seen his location

 

It really depends on the size turbo being used i.e. its air flow rate in CFM (cubic feet of air per minute), or lbs/min (pounds of air per minute)

As a pointer, I have a 20g turbo and I happen to have just bought Harvey's (on his recommendation) latest trick uppipe design for its matching GT1 tubular headers, and the entry is c.60mm dia.; the exit c.48mm. Plus it's slip jointed to prevent cracking. I believe a 20g typically flows IRO 38-40lb/min. (or 550-580 CFM)????

I'm getting the mapped tweaked for these items tomorrow.

 

Well,I guess I will have to buy one,as I don't want to ruin a good running car...
I'm shopping from the UK,because parts are more expensive here in Bulgaria...

 

Good decision.

Defo contact harvey... give him the list of your engine spec & suppoorting mods, and he will recommend the optimum uppipe for you (and headers if required)!

 

OK so you have a TD05 16G.
What headers are you using? Standard Subaru original equipment?
The uppipe I would supply you with would be stainless steel, slip jointed, purpose designed for your application with five new Subaru studs to connect to the turbo/brackets and DEI heat wrapped.
I do need to know what headers you are using because I would match the uppipe to your requirements but all the uppipes are purpose designed because obviously different uppipes are required for different applications. £139 plus delivery at cost.
harveysmith1@btopenworld.com
Regards,
Harvey.