Jump to content
SAU Community

Recommended Posts

bobby, is john going to make a support for the turbo/manifold?

is he expecting any problems form the manifold warping?

Hi,

No need to support the manifold at all.

Well once the manifold is on the car and running i doubt if we have any problems his engineered it well enough to keep away from any problems.

  • 2 weeks later...
  • 2 weeks later...

The head is at Wilkins engineering to drill the holes. This will help remove air locks above the combustion chamber in the head. Once its done i will port some pics of the work.

I have done some wiring on the car, i have installed pressure and temp sensors before and after cooler using 4 core tefzel wire.

post-49633-0-61686900-1318850714_thumb.jpg

post-49633-0-87755600-1318850740_thumb.jpg

Hey Bobby, are you going to come to SAU Nationals and bring along that Z-Tune of yours? Im sure everyone would love to see it there.

Hey Ian, Sorry just have to much work on atm. You are more then welcome to see John on the way back as we are 5 min off the freeway.

So who is doing the head porting and assembly Bobby?

Cleaning of the ports have been already done, no porting required, and i have posted pics of ports. This was done by John Skola.

Motor assembly will be done by Trevor ( Johns Close friend) . I sent the head to Wilkin's engineering to drill the head to relief airlocks, and he also linished the throttle body shafts. Ill be picking it up tomorrow so ill post some new pics.

Graeme Wilkins and John Skola worked together many years ago on race cars. This is why John gave me the green light for Graeme to do some work for me as John does not know many people that are capable of doing the job correctly. Graeme is based in Seven hill on Stanton rd www.wilkinsengineering.com.au.

The head needed the holes drilled to relief air locks above the combustion chamber, the holes drilled are 3.5mm using a Mill and making sure you dont go drilling into the port or the headbolt holes.

While the head was there, Graeme has noted down many measurements of the work that John has carried out on the head. ie port shape port cleaning and final port size. So if you wanted your RB26 head ported in the same manner as mine (as i now john dont have the time to do it) you can always go and see Graeme to get the job done.

Also Graeme has milled the throttle body shafts, gave him one that John did and he copied them to all three. This will help increase the area in the throttle when opened fully for increased air flow.

post-49633-0-07214800-1319533642_thumb.jpg

post-49633-0-31439100-1319533689_thumb.jpg

post-49633-0-58962800-1319533734_thumb.jpg

post-49633-0-90722600-1319533787_thumb.jpg

Did you get the head on a flow bench?

+1 to Wilkins doing great work on heads

Yes the head has been flowed and sorry i dont have the figures as john has the file somewhere, once i find the file i will list it with the rest fo the calculations he has done. File is worth a mint !!!!!!!!!!!!!!!!:thumbsup:

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • It would be well worth deciding where you want to go and what you care about. Reliability of everything in a 34 drops MASSIVELY above the 300kw mark. Keeping everything going great at beyond that value will cost ten times the $. Clutches become shit, gearboxes (and engines/bottom ends) become consumable, traction becomes crap. The good news is looking legalish/actually being legal is slighly under the 300kw mark. I would make the assumption you want to ditch the stock plenum too and want to go a front facing unit of some description due to the cross flow. Do the bends on a return flow hurt? Not really. A couple of bends do make a difference but not nearly as much in a forced induction situation. Add 1psi of boost to overcome it. Nobody has ever gone and done a track session monitoring IAT then done a different session on a different intercooler and monitored IAT to see the difference here. All of the benefits here are likely in the "My engine is a forged consumable that I drive once a year because it needs a rebuild every year which takes 9 months of the year to complete" territory. It would be well worth deciding where you want to go and what you care about with this car.
    • By "reverse flow", do you mean "return flow"? Being the IC having a return pipe back behind the bumper reo, or similar? If so... I am currently making ~250 rwkW on a Neo at ~17-18 psi. With a return flow. There's nothing to indicate that it is costing me a lot of power at this level, and I would be surprised if I could not push it harder. True, I have not measured pressure drop across it or IAT changes, but the car does not seem upset about it in any way. I won't be bothering to look into it unless it starts giving trouble or doesn't respond to boost increases when I next put it on the dyno. FWIW, it was tuned with the boost controller off, so achieving ~15-16 psi on the wastegate spring alone, and it is noticeably quicker with the boost controller on and yielding a couple of extra pounds. Hence why I think it is doing OK. So, no, I would not arbitrarily say that return flows are restrictive. Yes, they are certainly restrictive if you're aiming for higher power levels. But I also think that the happy place for a street car is <300 rwkW anyway, so I'm not going to be aiming for power levels that would require me to change the inlet pipework. My car looks very stock, even though everything is different. The turbo and inlet pipes all look stock and run in the stock locations, The airbox looks stock (apart from the inlet being opened up). The turbo looks stock, because it's in the stock location, is the stock housings and can't really be seen anyway. It makes enough power to be good to drive, but won't raise eyebrows if I ever f**k up enough for the cops to lift the bonnet.
    • There is a guy who said he can weld me piping without having to cut chassis, maybe I do that ? Or do I just go reverse flow but isn’t reverse flow very limited once again? 
    • I haven’t yet cut the chassis, maybe I switch to a reverse flow. I’ve got the Intercooler mounted as I already had it but not cut yet. Might have to speak to an engineer 
    • Yes that’s another issue, I always have a front mount, plus will be turbo plus intake will big hasstle. I’ve been told if it looks stock they’re fine with it by a couple others who have done it ahahaha.    I know @Kinkstaah said the stock gtt airbox is limiting but I might just have to do that to avoid a defect so it atleast looks legit. Or an enclosed pod so it’s hidden away and feed air from the snorkel and below Intercooler holes like kinstaah mentioned. Hmm what to do 
×
×
  • Create New...