[Stoffa]

http://ken-gilbert.c...st_manifold.htm

[Stoffa]

interesting read about cross pipes

http://forums.nasioc...d.php?t=1230511

[boostin]

I have a pair of BC RS manifolds I've done this to. I just need to clean up the cross pipe then smooth out the up pipe before fitting them.

[MSETURBOS]

theres afew tricks and things to be awear of doing the turbine hsg based on keeping boost at the topend when subs tend to fall over.

[Stoffa]

I've already ported my collectors out, i've ditched the factory up pipe and got a trust one thats's got no flexi (no turbulance) and slightly bigger diameter.
Its actually the same diameter as the factory turbo gasket, Steve's already built my turbo for me which has those "tricks" done to the exhaust housing, so it'll be a nice smooth transition from the uppipe to the turbo.
I'm also getting a custom cross pipe made once my engines built, so everything will end up port matched from the heads through to the turbo.

p.s Steve, if your reading this and trying to figure out who I am, its Chris from Welli (VF36 P20 and a BIG compressor wheel) , Andy's mate. btw Nice work on Johnny's turbo I was watching them try to squueze it in on saturday.

[boostin]

Does the bigger diameter up-pipe affect your spool time much? And the lack of a flexy joint hasn't cracked the manifold or turbo/turbo bracket?

[MSETURBOS]

Hay Stoffa cheers for that lets see what the "god" of all tuners of the universe can get out of it

[Stoffa]

MSETURBOS, on 30 March 2011 - 8:24 PM, said:

Hay Stoffa cheers for that lets see what the "god" of all tuners of the universe can get out of it

Will be interesting, he was certianly suprised with andys when he reflashed it.

Boostin: My engines not built yet, off the road for 2 years now I doubt it'll make any difference on spool time though as its the sane size the whole way through, with the up pipe port matched with the exhaust housing its got no turbulance and the exhaust flow speeds up anyway as the exhaust housing get narrower. I'm sure if it were a rangi chinese 2 1/2 inch uppipe that has a huge lip before it gets to the turbo it would effect the turbo performance.
Dont believe everything you read on the forums about up pipe size. I'm sure Trust couldn't get away with charging $200+ for an up pipe if it made the performance worse, these japanese companies put a huge amount of time/money into R&D.

If I was using a standard unported turbo there wouldn't be much point in an uppipe with a bigger diameter than the turbo inlet.

As for the lack of flexi, I doubt it'll crack as its made of very thick stainless and has about 12mm thick flanges. I'm convinced that the need for less turbulance outweighs the need for a flexi.
I will however have a flexi in my new crosspipe to deal with heat expansion of the engine

Heres a before and after of some of my porting

[boostin]

Oh ok, still off the road. Bugger.

When I find my manifolds in the black hole (aka garage - everything that goes into it disappears), I'll take some pics too. So far I've spent about 2 hours on them, porting them and removing heat shield mounting tags.

[MSETURBOS]

Would be nice to have an extruded hone in nz anyone know if aussie has one?
All the porting you guys are doing is very much a good thing the main thing that hurts responce is pipe size

[boostin]

Lol, I googled "extrude hone nz", and the first result ends up telling you to go see this guy Crunchy, aka Steve Murch.

[MSETURBOS]

boostin, on 31 March 2011 - 5:17 PM, said:

Lol, I googled "extrude hone nz", and the first result ends up telling you to go see this guy Crunchy, aka Steve Murch.

wouldnt trust him hes a dodgy bastard

[Familyman]

Bahaha!! Aussie does have an extrude hone outfit now....
But the name escapes me. Read a great article about it in Street Machine coupla years ago. Maybe flick them an email?

[boostin]

Familyman, on 31 March 2011 - 8:07 PM, said:

Bahaha!! Aussie does have an extrude hone outfit now....
But the name escapes me. Read a great article about it in Street Machine coupla years ago. Maybe flick them an email?

Specialised Power Porting.

[Stoffa]

that would be awesome, it would be nice to also extrude hone your inlet manifold and get rid of the casting marks.

[boostin]

Stoffa, on 03 April 2011 - 9:06 AM, said:

that would be awesome, it would be nice to also extrude hone your inlet manifold and get rid of the casting marks.

A bit of turbulence in the intake is good though. It helps with swirl and tumble into the cylinder and assists combustion.

[MSETURBOS]

boostin, on 03 April 2011 - 9:33 AM, said:

Stoffa, on 03 April 2011 - 9:06 AM, said:

that would be awesome, it would be nice to also extrude hone your inlet manifold and get rid of the casting marks.

A bit of turbulence in the intake is good though. It helps with swirl and tumble into the cylinder and assists combustion.

on the intake side yes

[MSETURBOS]

p.s Steve, if your reading this and trying to figure out who I am, its Chris from Welli (VF36 P20 and a BIG compressor wheel) , Andy's mate. btw Nice work on Johnny's turbo I was watching them try to squueze it in on saturday.
[/quote]


hay chris has johnny said how his car drives? andy said 241kw wheel on 20 psi and the map sensor wasnt happy?
with the intake cam change it should put him over 260kw, but since its one of them crap turbo upgrades i do that afew uneducated keyboard knob clubsub dorks go on about then i guess it works not to bad or as they say you can get 290kw from a vf22
i should email that post to IHI theyll enjoy that one,opps my bad did i say all that out loud?

Heres an idea i came up with ( doesnt happen too often ) have a sub drag day with a differance using a veracom do flying runs between 60-120kph weigh each car and use the time to work out the power,with the numbers those speacial clubsub people qoute we should see some weapons!!! ill pay to come watch
sorry guys i get somewhat pissed with idiots that mislead others and all they have to show is a dyno sheet,the black top tells all.

[Drunkenmonkey]

Dnt blame you getting pissed off.. There is reason we migrated here XD

[blk ice]

A bit of turbulence in the intake is good though. It helps with swirl and tumble into the cylinder and assists combustion.
[/quote]


so a smooth inside for the intake isnt going to give any gains?