MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: Hurdy on May 09, 2009, 04:18:42 pm

Title: JBS K04 cast manifold in development.
Post by: Hurdy on May 09, 2009, 04:18:42 pm

JBS are developing a K04 cast manifold....

http://uk-mkivs.net/forums/t/269874.aspx

They have already developed a K03 cast manifold and ....so far...have had good results from testing...

http://uk-mkivs.net/forums/t/219683.aspx

I have a few questions for any engine guru's out there.

If the K04 manifold could produce similar results as the K03 version (50% flow increase), how much benefit would you possibly see in terms of power output?

Could it simply be that a K04 manifold strapped to a modified ED30 would simply mean that it wouldn't suffer from heatsoak as much?

Any other benefits?

Title: Re: JBS K04 cast manifold in development.
Post by: bacillus on May 09, 2009, 07:29:18 pm

iirc that manifold is for the mk4

Title: Re: JBS K04 cast manifold in development.
Post by: chungster on May 09, 2009, 09:59:31 pm

yup, they even posted a pic comparing it to the normal manifold with "BAM" on it, which was the 1.8T 225ps motor.

No point for our engines, as the manifold / turbo are integrated / 1 piece. The old style was seperate so designing a more efficient exhaust manifold for the turbo was beneficial.

Title: Re: JBS K04 cast manifold in development.
Post by: RedRobin on May 09, 2009, 11:05:18 pm

Quote from: chungster on May 09, 2009, 09:59:31 pm

No point for our engines, as the manifold / turbo are integrated / 1 piece. The old style was seperate so designing a more efficient exhaust manifold for the turbo was beneficial.

(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fb308%2FRedRobin_05%2FK03_RevG.jpg&hash=4258c0840f53eabb6793bdf7f8ea363456d199fe)

^ K03 turbo integrated with manifold on Mk5 (mine!) ^

Title: Re: JBS K04 cast manifold in development.
Post by: Hurdy on May 09, 2009, 11:24:46 pm

Well, you learn something new every day.  8)

Title: Re: JBS K04 cast manifold in development.
Post by: neg on May 10, 2009, 01:26:37 am

Looks like they have moved away from the equal length one then... not that it fit so I'll keep stum  :laugh:

Title: Re: JBS K04 cast manifold in development.
Post by: bennylenny88 on May 10, 2009, 01:50:54 am

is there any part of your car that isnt touched RR?

Title: Re: JBS K04 cast manifold in development.
Post by: chungster on May 10, 2009, 10:13:30 am

Quote from: bennylenny88 on May 10, 2009, 01:50:54 am

is there any part of your car that isnt touched RR?

RR needed a replacement turbo due to a slight crack losing him precious boost and bhp.

Title: Re: JBS K04 cast manifold in development.
Post by: RedRobin on May 10, 2009, 11:29:45 am

Quote from: chungster on May 10, 2009, 10:13:30 am

Quote from: bennylenny88 on May 10, 2009, 01:50:54 am

is there any part of your car that isnt touched RR?

RR needed a replacement turbo due to a slight crack losing him precious boost and bhp.

(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fb308%2FRedRobin_05%2FBoostLeak6.jpg&hash=53309724cfed664e21bc98e14dfb42b496e057fa)

^ Crack in the manifold casting of the turbo wastegate ^

Linky : - Troubleshooting a Boost Leak.... (http://www.mk5golfgti.co.uk/forum/index.php?topic=493.0)