Jump to content
SAU Community

Recommended Posts

Well its a carbon copy of Elrodeo666's head which was good enough for 445 kw at 1.4 bar on -5's.

Have a look at the inlet ports on Brad's engine (SHOWOFFR32)... that is what they should look like.

Have a look at the inlet ports on Brad's engine (SHOWOFFR32)... that is what they should look like.

BRB. I'll go tell the bloke that ported the HKS drag car that he did it wrong.

BRB. I'll go tell the bloke that ported the HKS drag car that he did it wrong.

Go ahead... All I am suggesting is that the port looks polished from the photo.

To enhance mixture quality it is better to have a textured inlet port surface, especially considering you have massive injectors that wont atomise very well.

Well they proberbly are. But considering the guy has built mild to wild RB's day in and day out for the last 20 years, there must be a reason why he has done what he has done. Who know's what that reason is. I'll ask him in two weeks time when Marcus will sit him down and call me from Japan.

Have a look at the inlet ports on Brad's engine (SHOWOFFR32)... that is what they should look like.

The guy in Japan who has done all the port/polish and r&d on the head has built more high powered full race engines, 9 sec drag engines and drift spec engines then most porn stars have ever had roots.

And yes its polished as well. Why..you'll need to ask him about it but as one of Japans top engine builders who has built 100's of high spec engines, I think he has a resonable idea of what he's doing.

But hey everyone has their opinions.

And Paul its 445kw @ 1.3bar

The guy in Japan who has done all the port/polish and r&d on the head has built more high powered full race engines, 9 sec drag engines and drift spec engines then most porn stars have ever had roots.

And yes its polished as well. Why..you'll need to ask him about it but as one of Japans top engine builders who has built 100's of high spec engines, I think he has a resonable idea of what he's doing.

But hey everyone has their opinions.

And Paul its 445kw @ 1.3bar

Just to be clear, your talking flow from a polished port vs fuel atomisation from a rough cut port right?

I figure the rate that Paul's car drinks E85 it probably won't make a lot of difference when its on song. Its not as though there are a lot of injector options to provide a streetable 2lt/min injector flow. The value of optimising fuel atomisation from porting/polishing methods could probably be weighed against the options available for injector spray patterns for similar effect.

Just to be clear, your talking flow from a polished port vs fuel atomisation from a rough cut port right?

I figure the rate that Paul's car drinks E85 it probably won't make a lot of difference when its on song. Its not as though there are a lot of injector options to provide a streetable 2lt/min injector flow. The value of optimising fuel atomisation from porting/polishing methods could probably be weighed against the options available for injector spray patterns for similar effect.

Theres more going on with this head than just a port /polish job.

Been all machined up at Naprec to HKS race specs and then some custom work by HKS.

It has been designed purely for response and slamming his arse hard back in the seat and fro getting around a track nice and quick.

Pauls head has a bit more done to it than mine and has been built to handle 600~650kw if he ever chooses to go down that path.

Anyway this is Pauls build so wait a few weeks and he'll let you see whats what and at the end of the day it all comes down to what it does when it's all bolted together and tuned properly.

It will be interesting to see how it all ends up..

Hopefully one day maybe a V-cam and those new turb's that Gav has, it would be quite an animal.

Unfortunate about the old engine!

But it will certainly be interesting to see how this new setup performs in relation to the old setup. Especially with the addition of the new head. What sort of port job was done to the old head?

My mates car runs low 9's with a near std head, ports are just cleaned up. Makes about 880rwhp. What bigmikespec has said holds true, port finish 101 regardless of head type or setup usually doesn't go any finer finish then 80grit. Polishing the surface slows air speed and ruins mixture motion through the port. But maybe this particular guy has a formula that works for him and it goes against the theory that everybody else in the world works around. It will be interesting to see if it makes a difference or not.

Gotta keep an open mind about everything!

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

    • Who did you have do the installation? I actually know someone who is VERY familiar with the AVS gear. The main point of contact though would be your installer.   Where are you based in NZ?
    • Look, realistically, those are some fairly chunky connectors and wires so it is a reasonably fair bet that that loom was involved in the redirection of the fuel pump and/or ECU/ignition power for the immobiliser. It's also fair to be that the new immobiliser is essentially the same thing as the old one, and so it probably needs the same stuff done to make it do what it has to do. Given that you are talking about a car that no-one else here is familiar with (I mean your exact car) and an alarm that I've never heard of before and so probably not many others are familiar with, and that some wire monkey has been messing with it out of our sight, it seems reasonable that the wire monkey should be fixing this.
    • Wheel alignment immediately. Not "when I get around to it". And further to what Duncan said - you cannot just put camber arms on and shorten them. You will introduce bump steer far in excess of what the car had with stock arms. You need adjustable tension arms and they need to be shortened also. The simplest approach is to shorten them the same % as the stock ones. This will not be correct or optimal, but it will be better than any other guess. The correct way to set the lengths of both arms is to use a properly built/set up bump steer gauge and trial and error the adjustments until you hit the camber you need and want and have minimum bump steer in the range of motion that the wheel is expected to travel. And what Duncan said about toe is also very true. And you cannot change the camber arm without also affecting toe. So when you have adjustable arms on the back of a Skyline, the car either needs to go to a talented wheel aligner (not your local tyre shop dropout), or you need to be able to do this stuff yourself at home. Guess which approach I have taken? I have built my own gear for camber, toe and bump steer measurement and I do all this on the flattest bit of concrete I have, with some shims under the tyres on one side to level the car.
    • Thought I would get some advice from others on this situation.    Relevant info: R33 GTS25t Link G4x ECU Walbro 255LPH w/ OEM FP Relay (No relay mod) Scenario: I accidentally messed up my old AVS S5 (rev.1) at the start of the year and the cars been immobilised. Also the siren BBU has completely failed; so I decided to upgrade it.  I got a newer AVS S5 (rev.2?) installed on Friday. The guy removed the old one and its immobilisers. Tried to start it; the car cranks but doesnt start.  The new one was installed and all the alarm functions seem to be working as they should; still wouldn't start Went to bed; got up on Friday morning and decided to have a look into the no start problem. Found the car completely dead.  Charged the battery; plugged it back in and found the brake lights were stuck on.  Unplugging the brake pedal switch the lights turn off. Plug it back in and theyre stuck on again. I tested the switch (continuity test and resistance); all looks good (0-1kohm).  On talking to AVS; found its because of the rubber stopper on the brake pedal; sure enough the middle of it is missing so have ordered a new one. One of those wear items; which was confusing what was going on However when I try unplugging the STOP Light fuses (under the dash and under the hood) the brake light still stays on. Should those fuses not cut the brake light circuit?  I then checked the ECU; FP Speed Error.  Testing the pump again; I can hear the relay clicking every time I switch it to ON. I unplugged the pump and put the multimeter across the plug. No continuity; im seeing 0.6V (ECU signal?) and when it switches the relay I think its like 20mA or 200mA). Not seeing 12.4V / 7-9A. As far as I know; the Fuel Pump was wired through one of the immobiliser relays on the old alarm.  He pulled some thick gauged harness out with the old alarm wiring; which looks to me like it was to bridge connections into the immobilisers? Before it got immobilised it was running just fine.  Im at a loss to why the FP is getting no voltage; I thought maybe the FP was faulty (even though I havent even done 50km on the new pump) but no voltage at the harness plug.  Questions: Could it be he didnt reconnect the fuel pump when testing it after the old alarm removal (before installing the new alarm)?  Is this a case of bridging to the brake lights instead of the fuel pump circuit? It's a bit beyond me as I dont do a lot with electrical; so have tried my best to diagnose what I think seems to make sense.  Seeking advice if theres for sure an issue with the alarm install to get him back here; or if I do infact, need an auto electrician to diagnose it. 
    • Then, shorten them by 1cm, drop the car back down and have a visual look (or even better, use a spirit level across the wheel to see if you have less camber than before. You still want something like 1.5 for road use. Alternatively, if you have adjustable rear ride height (I assume you do if you have extreme camber wear), raise the suspension back to standard height until you can get it all aligned properly. Finally, keep in mind that wear on the inside of the tyre can be for incorrect toe, not just camber
×
×
  • Create New...