how can i tell if my sub has a twin scroll turbo?
09 February 2008, 05:24 PM
#1
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how can i tell if my sub has a twin scroll turbo?
hi i have a 03 sti jdm, ive been told it has no centre cat as standard but i have taken the exhuast off and there is a centre cat
how can i tell if my car has the twin scroll turbo???
how can i tell if my car has the twin scroll turbo???
09 February 2008, 07:48 PM
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If you look at the inlet side of the turbo on the side of the turbo there's a flat surface with the model its not stamped just electric pencil it will have Vf37 at the top on the Jdm Sti or if its a spec c Vf36 they are twin scroll turbo's.
09 February 2008, 08:35 PM
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http://i29.tinypic.com/smsro3.jpg
10 February 2008, 12:50 AM
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first of all, you don't have a cat in the centre section, and if it's an actual 03 car (blobeye with wide ovalish headlamps) rather than a later registered 02 car (bugeye with round headlamps), then it will have a twinscroll turbo.
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10 February 2008, 09:51 AM
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or does it supposed to have that cat???
Last edited by v8 jdm; 10 February 2008 at 09:53 AM.
10 February 2008, 10:16 AM
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hmmmm, something isn't quite right, I don't think i've ever seen a jdm with a 2 piece downpipe.
that shorter pipe in the picture (which I could only see part of on my laptop!) is usually a cat pipe, but only really found on the Euro models. the JDM cars usually have the link pipe and downpipe as one large downpipe. The longer pipe with the offset box in, is referred to as the centre section and has a silencer only in it, it appears common on UK and JDM models.
picture looking down at the turbo from above would clear up the twinscroll question.
that shorter pipe in the picture (which I could only see part of on my laptop!) is usually a cat pipe, but only really found on the Euro models. the JDM cars usually have the link pipe and downpipe as one large downpipe. The longer pipe with the offset box in, is referred to as the centre section and has a silencer only in it, it appears common on UK and JDM models.
picture looking down at the turbo from above would clear up the twinscroll question.
10 February 2008, 10:33 AM
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hmmmm, something isn't quite right, I don't think i've ever seen a jdm with a 2 piece downpipe.
that shorter pipe in the picture (which I could only see part of on my laptop!) is usually a cat pipe, but only really found on the Euro models. the JDM cars usually have the link pipe and downpipe as one large downpipe. The longer pipe with the offset box in, is referred to as the centre section and has a silencer only in it, it appears common on UK and JDM models.
picture looking down at the turbo from above would clear up the twinscroll question.
that shorter pipe in the picture (which I could only see part of on my laptop!) is usually a cat pipe, but only really found on the Euro models. the JDM cars usually have the link pipe and downpipe as one large downpipe. The longer pipe with the offset box in, is referred to as the centre section and has a silencer only in it, it appears common on UK and JDM models.
picture looking down at the turbo from above would clear up the twinscroll question.
10 February 2008, 10:49 AM
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Have a look in articles and project spec c ie engine Stage 1 page 4 and you will see the standard uk/euro sti downpipe and the Jdm sti twin scroll downpipe and your looks standard Sti down pipe going by your picture.The Jdm sti with twin scroll has a open neck down pipe standard from subaru with a cat in the down pipe
10 February 2008, 11:10 AM
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Have a look in articles and project spec c ie engine Stage 1 page 4 and you will see the standard uk/euro sti downpipe and the Jdm sti twin scroll downpipe and your looks standard Sti down pipe going by your picture.The Jdm sti with twin scroll has a open neck down pipe standard from subaru with a cat in the down pipe
hi cant find the thread whos thread is it?
10 February 2008, 12:07 PM
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yes it does, its got the dccd folding mirrors and all the other extras?
10 February 2008, 12:17 PM
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10 February 2008, 03:32 PM
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10 February 2008, 03:35 PM
#20
Seen your other thread. As you've got the other goodies from a JDM car then the IC spray bottle must be in the engine bay.
So someone has either swapped all parts from the exhaust manifolds back inc turbo, or there has also been a major transplant with the engine.
Yup, the VF35 is from a UK STi.
So someone has either swapped all parts from the exhaust manifolds back inc turbo, or there has also been a major transplant with the engine.
Yup, the VF35 is from a UK STi.
10 February 2008, 06:39 PM
#23
Seen your other thread. As you've got the other goodies from a JDM car then the IC spray bottle must be in the engine bay.
So someone has either swapped all parts from the exhaust manifolds back inc turbo, or there has also been a major transplant with the engine.
Yup, the VF35 is from a UK STi.
So someone has either swapped all parts from the exhaust manifolds back inc turbo, or there has also been a major transplant with the engine.
Yup, the VF35 is from a UK STi.
I think Butty has it nailed down to the two most obvious options.
A quick install of a complete engine/Turbo package.
A planned deviation from twin scroll to single scroll (Possibly for the purpose of removing modified parts).
Its not necassarily a setback.
I have a twin scroll and think it its nicer to drive standard-to-standard, but as Steve says if you are looking to upgrade there are far more (Cheaper) options for upgrading the single scroll unit.
11 February 2008, 08:27 PM
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think i will just get rid now its done my head in, the remap only cost 300 but because i said i want happy he only charged me 200, he is a good mapper heard about his mappings before so thats why i went there dont no why i dint gain no power took 4 hours to sort it, only had the car 2 months so goin to the guy who i bought it off and demand money iam well pissed, here is the ebay item that i bought the car from 120193821538 have a look he said it was a twin scroll??
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