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Author: Subject:  2443 Twin turbo street bug project, back on track again.
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posted on July 25th, 2009 at 04:15 PM



WOWSERS!
Looks sensational Ian. We're all hanging to see how it goes!:tu:




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posted on July 25th, 2009 at 05:37 PM



:starhit: Thats awesome mate



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posted on July 25th, 2009 at 06:42 PM



That engine looks incredible, love the carbon/polished contrast!



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posted on July 25th, 2009 at 07:28 PM



i think ive gone bananas,,....

nothing short of WOW....
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posted on July 25th, 2009 at 08:24 PM



Sensational :!:
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posted on July 27th, 2009 at 10:07 PM



Looks nice! I don't know about the orange valve covers though.



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posted on July 27th, 2009 at 10:35 PM



Quote:
Originally posted by Baja Wes
Looks nice! I don't know about the orange valve covers though.


Just as well they weren't red or you would have said straight out how horrible they were... :)




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posted on July 27th, 2009 at 10:41 PM



Quote:
Originally posted by reub-revhead
Quote:
Originally posted by Baja Wes
Looks nice! I don't know about the orange valve covers though.


Just as well they weren't red or you would have said straight out how horrible they were... :)


I agree... Orange is the colour out of the box. I'll be painting them flat black along with the tinware once its back from the sand blasters.
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posted on July 27th, 2009 at 11:03 PM



I like the orange... its out there... Looking good mate.
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posted on July 28th, 2009 at 06:11 AM



looken great ian what brand is your dry sump pump?



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posted on July 28th, 2009 at 09:01 PM



Quote:
Originally posted by mactaylor
looken great ian what brand is your dry sump pump?


Its an RPM 4 stage. 1st stage is 1.250", and the scavenge stages are all 1.75" stages.

The engine is now back in the car today. Im working on the header again now and have re-mouted one of the turbo's so far. I'll have some pics up in a few days when its finished.

Cheers,
Ian
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posted on July 29th, 2009 at 01:14 AM



crazy

awsome and inspirational




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posted on July 30th, 2009 at 02:00 PM



Looking good Ian,
what ecu are you going to use?
what is your predicted KW




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posted on July 30th, 2009 at 03:22 PM



Quote:
Originally posted by Boostn
Looking good Ian,
what ecu are you going to use?
what is your predicted KW


I'll be using a Wolf version 5 ecu and MSD DIS2 or 4 ignition with 2 or 4 coils (havent quite decided just yet).

Power level predictions? Well the pair of trust T517z's are rated flow 700hp to the flywheel on a RB26, and examples of them tuned in GTR's they make around 400awkw maxed out. I hope to see 450-500rwhp on a max power tune, but time will tell.

Still working on the header today. The engine sure looks good bolted into the back of the car again now.
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posted on July 30th, 2009 at 09:14 PM



Pics please :yes:
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posted on July 31st, 2009 at 06:09 AM



"The engine sure looks good bolted into the back of the car again now."



YEAH!!!!

You cant say that and have no pictures!!!




Quote:
Originally posted by westi
That's mad Alan.
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posted on July 31st, 2009 at 06:08 PM



Well here's the header 1/2 finished with the altered turbo positioning. This time I made a bracket to hold the turbo flange where I wanted it first, then ran the plumbing to it. Such a smarter way of keeping things leval than trying to hold something in position when welding it all together using curved pipes. Ive used mild steel for the header and Turbo X black ceramic coat it and the turbo's turbine housings rather than mess around with stainless.

I'll be able to easily put a thin stainless sheet metal heat shied around the turbo housings too. There is plenty of room, not that the pics show that. Enough to easily run 3" dumps from the turbo's with plenty of tyre clearance, but it will most likely end up being 2.5" as thats the size all the valving is for the sequential setup im using.

http://users.on.net/~iswinkels/Hosted/Header/DSC01851.JPG

Manifolds are just temporarily fitted. Ive got to work out how I want to do the intake manifolds next. Im contemplating using a plenum chamber above each manifold and a single 3" pipe from each side to a center mounted throttle body, or running 2 x 2.5" pipes to a merge and then 2.5" from each merge to a center mounted throttle. The 2.5" setup would maintain better air flow at low RPM which should mean better torque in theory but I dont think that will be a problem with this engine. The 3" idea is a lot easier to manufacture.

http://users.on.net/~iswinkels/Hosted/Header/DSC01846.JPG

http://users.on.net/~iswinkels/Hosted/Header/DSC01847.JPG

http://users.on.net/~iswinkels/Hosted/Header/DSC01848.JPG

http://users.on.net/~iswinkels/Hosted/Header/DSC01849.JPG

I'll be finishing off the rear pipe work on the weekend, and then I want to pressure test it to check I havent left any pinholes in my welding.

Cheers,
Ian
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posted on July 31st, 2009 at 11:17 PM



With the aluminum trailing arms, you've got so much more room for the turbo's and exhaust (when you do make it)
It's definately looking good!!
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posted on August 10th, 2009 at 07:06 PM



Hi guys,

Well I got nothing at all done over the weekend, instead decided to have the day off to blow my nose and drink buckets of mucas but all good now.

Last week I had some flanges laser cut so when I knocked off work today after lunch I was able to get started on the intake manifolds. These are the comp eliminator manifolds I used on the last engine. There is a balance pipe welded through both ports (for when it had quad throttles on it), which I will still use as it keeps the vacuum hoses nicely hidden. This is how I mounted the fuel rails too, It proved very effective and is a lot neater than how CB would have you do it.

http://users.on.net/~iswinkels/Hosted/Intake/DSC01858.JPG

http://users.on.net/~iswinkels/Hosted/Intake/DSC01859.JPG

Here is one side of the intake manifold before its tig welded. Ive given the flanges and pipe the once over with the polisher too of course. Welds to the flanges will be internal and then the flanges will be milled dead flat again.
http://users.on.net/~iswinkels/Hosted/Intake/DSC01857.JPG

And here's what it looks like from the top. Its so time consuming making nice merges, especially when they have to look good. Where's Westi when you need him...
http://users.on.net/~iswinkels/Hosted/Intake/DSC01856.JPG

Cheers,
Ian
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posted on August 10th, 2009 at 07:18 PM



lookin' the goods Ian.
Keep the pics coming
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posted on August 10th, 2009 at 07:47 PM



Nice, Rochester 1000cc shower head injectors. They are great to tune down low.
The injector mount is much nicer than the std CB way !!
Can't wait to see the dyno sheets for this.




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posted on August 23rd, 2009 at 07:14 PM



They are rochesters but these are 650cc's from memory. Enough to get started and run in with but i'll be having to upgrade when I go after a max power figure. Ive got a base map from my 2443 that ran these injectors so it will mean no startup issues in theory...

So its been a little while since the last update. Ive been outsourcing having the tig welding done on the intake manifolds. The guys doing the work are very good but also busy so my project has been put to the bottom of their list as far as priority's go, which is a bit of a pain in the ass.

The first intake manifold end I had welded introduces me to how much stainless steel pulls when its welded. The flanges on the first intake end were about 5mm closer together once the merge was welded on the above pictures, so I had to do a lot of swearing to get it back onto the 4 mounting studs, bolt it on and then have some wedges welded in between the flanges to stop the whole lot twisting up and distorting.

http://users.on.net/~iswinkels/Hosted/Intake/DSC01863.JPG

I got it right on the 2nd intake and had these wedges welded to the flanges first before they were unbolted from the manifolds and the pipes then internally welded to the flanges.
http://users.on.net/~iswinkels/Hosted/Intake/DSC01864.JPG

With the ends done I set about doing the plumbing in between. This is more or less what it will look like, with the throttle body in the center through the firewall. The welding is being done on this tomorrow (hopefully). Im having this done in stages so I can re-check the pipe alignment and adjust for the material distortion that comes with the welding.

The entire intake will be flanged/bolt together, except for the left side behind the pump where there will be a clamped expansion joint.

http://users.on.net/~iswinkels/Hosted/Intake/DSC01861.JPG

As for this weeks activities ive been focusing on the exhaust system starting with dump pipes and the start of the exhaust. Ive used 2 x 2.5" pipes on the turbo flanges, cut them and joined them the full length so they fit nicely on the flange. Ive welded them internally and blended them to the pipe on the inside. The other end of the dump pipes then expands to 3" where it then runs parallel to the rocker cover as you can see.

3" might be seen as being a little excessive, but that is the standard size that would be being used if these turbo's were on an RB26DETT in a GTR, which is what they are designed for. The only diference is that I wont be merging them back together, there will be a 3" muffler on each pipe and an exhaust pipe behind each tyre. Im glad the wheels are so wide on the rear end, it makes for plenty of room for the mufflers.

http://users.on.net/~iswinkels/Hosted/Intake/DSC01865.JPG

Thats all for now.

Cheers,
Ian
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posted on August 23rd, 2009 at 08:38 PM



Nice work. It's looking sweet Ian.

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posted on August 24th, 2009 at 04:27 PM



This thing is insane! nice work dude!

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posted on August 24th, 2009 at 07:55 PM



This build takes VW Porn to a new level, bloody awesome Ian.



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posted on August 24th, 2009 at 08:01 PM



SCHAWING :starhit:



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posted on August 25th, 2009 at 05:15 PM



Howdee all,

Another update... Manifold nearing completion. The 2nd last lot of tig welding is now done, and ive got just the two last pieces and a throttle flange to have welded onto it now. With any luck it will be ready tomorrow afternoon.

http://users.on.net/~iswinkels/Hosted/Intake/DSC01871.JPG

Cheers,
Ian
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posted on August 26th, 2009 at 08:29 PM



Welding finished at last.

http://users.on.net/~iswinkels/Hosted/Intake/DSC01872.JPG

http://users.on.net/~iswinkels/Hosted/Intake/DSC01873.JPG

Finishing the exhaust this weekend and then its time to break open the wallet and order some intercoolers and hoses for oil and fuel. Im beginning to see light at the end of the tunnel now.
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posted on August 26th, 2009 at 08:36 PM



Its looking great. Out of interest, whats the deal with the red bandage :S looks great. Sorry, If iv missed it before, but one injector per Cylinder.... what size for this setup! amazing progress there :) looking great :)
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posted on August 26th, 2009 at 08:47 PM



The "red bandage" is a piece of 2.5" silicon hose. I'll is the expansion joint between both sides of the engine. Injectors will have to be around 1000cc to make the big power figure im after, but the 650cc injectors are still for well over 300hp which will be the street tune of the car.
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