Gtir Motorsport club

Welcome to the largest Nissan Pulsar & Sunny GTI-R Forum. Masses of info, friendly members, cars for sale, lots of spares. Best forum on the net by far. Everything your gtir needs is here.


You are not connected. Please login or register

Gtir Motorsport club » Tech room » engine build's » Manifold question/external wastegate

Manifold question/external wastegate

Go down  Message [Page 1 of 1]

1 Manifold question/external wastegate on 29th January 2018, 1:32 pm

Bandyleg

avatar
So as most of you know im slowly making progress with my car... today i removed the turbo from the manifold to find that the external wastgate is only venting cyclinders 1 and 4.... ive had my little fingers down the hole to double chek...
I could do with knowing what issuez this wil cause or is their justified reasoning for this?

2 Re: Manifold question/external wastegate on 29th January 2018, 4:21 pm

Bandyleg

avatar
I forgot to say, i know that eventually they all connect... and im probably just being daft but im just double checking

3 Re: Manifold question/external wastegate on 29th January 2018, 11:03 pm

gtir_woody

avatar
moderator
moderator
Where exactly is it on the manifold, I think I know but can’t tell in that pic

4 Re: Manifold question/external wastegate on 30th January 2018, 8:51 am

Bandyleg

avatar


5 Re: Manifold question/external wastegate on 30th January 2018, 11:01 am

GTI-R US

avatar
Management
Management
Never seen that done on a stock manifold before and as you say it will only work on the two outer cylinders.
Actually will not make any difference to the performance of the wastegate i would have thought. Once the desired boost pressure is reached the wastegate will still open in the same manner as it would if working off all ports.

Interesting though what they have done to that manifold especially with the thicknesser plate added.
The only thing i would do if i were you would be to port the wastegate apperture as it looks to be very restrictive, would also port the manifold aswell (as its obviously running a large turbo) and match it to the exhaust ports in the head.

Have you got a pic of the entire manifold?


_________________
                                GTI-R-US.CO.UK
                                    Nissan Pulsar Gti-R Specialists
                                            'In association with'
                           Torque Of The South Motorsport
             Dyno Developments 4wd rolling road & Performance Tuning Centre
                                          'Services provided'
Forged engine rebuilds, Dyno power runs & Ecu mapping, Dyno diagnostics, Sonic injector cleaning, Performance upgrades,
Full Race setup's, Servicing, Mot's, Restorations, conversions, fabrication, Worlds largest stockist of quality used parts for the Gti-r
http://www.gti-r-us.co.uk www.force500.com

6 Re: Manifold question/external wastegate on 30th January 2018, 4:22 pm

Bandyleg

avatar
Yeah, the wastegate is badly badly done... oys rougher than a badgers arse in their, so ive every intention of porting it. Im also considering welding the manifold extender plate onto the mani so it can be ported as one as its also badly done.






7 Re: Manifold question/external wastegate on 30th January 2018, 4:23 pm

Bandyleg

avatar
The little penny flap has been welded as expected to convert to external wastgate.

8 Re: Manifold question/external wastegate on 31st January 2018, 12:52 pm

GTI-R US

avatar
Management
Management
Has that turbo got a wastegate penny?
looks like a 4 bolt flanged 3076-8 to me so surprised it came with an internal gate in ex housing scratch


_________________
                                GTI-R-US.CO.UK
                                    Nissan Pulsar Gti-R Specialists
                                            'In association with'
                           Torque Of The South Motorsport
             Dyno Developments 4wd rolling road & Performance Tuning Centre
                                          'Services provided'
Forged engine rebuilds, Dyno power runs & Ecu mapping, Dyno diagnostics, Sonic injector cleaning, Performance upgrades,
Full Race setup's, Servicing, Mot's, Restorations, conversions, fabrication, Worlds largest stockist of quality used parts for the Gti-r
http://www.gti-r-us.co.uk www.force500.com

9 Re: Manifold question/external wastegate on 31st January 2018, 1:54 pm

Bandyleg

avatar





10 Re: Manifold question/external wastegate on 1st February 2018, 2:41 pm

Mr B

avatar
gtir technician
gtir technician
Normally when you do this 2 important things are angle of wastegate flange runner to ports, needs be a y angle rather than 90 angle, also you add a small balancing hole in the manifold divider to help balancing and wastegate smoothness .
I done a post on here few years back on this with some info/pics .

Can work well but starts getting to point that a steam tube custom manifold starts looking better way go pending on turbo and power goal .

11 Re: Manifold question/external wastegate on 1st February 2018, 6:48 pm

Bandyleg

avatar
I dont suppose you know where abouts that post is mr b?
My goal was never to run big power, I only want 380-400 and that should be easy done... im more worried about the current manifold set up causing pressure problems as im not exactly clued up on these things. Ahhhh the life of a pulsar owner, always something lol

12 Re: Manifold question/external wastegate on 2nd February 2018, 11:41 pm

Mr B

avatar
gtir technician
gtir technician
This is one thread touching subject in couple posts .
http://www.gtir-motorsport-club.com/t6995-hi-flow-bov

Was another which thought done on hear with some pics as well but not found that yet, 6:40am here and I need some breakfast ....

13 Re: Manifold question/external wastegate on 3rd February 2018, 7:47 pm

Bandyleg

avatar
Thanks Mr B, ill have a read through see what I can pick up from it.

Sponsored content


Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum