Jump to content
SAU Community

Recommended Posts

I'm in the early stages of setting up a deal to have some heads CNC ported. These heads will be done on a 5 axis CNC machine and flow figures will be guaranteed to be the same for every port. It's a pretty costly exercise to set up for and I'm wondering if people would be willing to pay to have it done. The porting should cost between $800-$1100 per head, cheaper if it was a batch being done.

The port design will be hand ported and then flow tested until it is spot on and then digitised. It will be a few months before anything will be ready but I just want to know what sort of interest there is out there.

Link to comment
https://www.sau.com.au/forums/topic/94339-cnc-ported-rb25-rb26-heads/
Share on other sites

yeah me to just finish hand porting mine last week and the head has been rebuilt but i will watch this thread with interest.

Getting the first ports right would be the time consuming part i guess and the gain over std would be the selling point, it might be worth flowing the std port and develop the template ports inlet/exhaust as if you have flow test showing the increase of the port design in question it would be alot more easy to justify the cost if you know you will get x amount of increase flow (you know what your buying so to speak)

Great again to see someone trying new things with sau great stuff proengines

pete

There are already a few places offering this service on RB26 heads, but you are going to find that there is substantial core shift on the castings. Rough CNC and hand finishing/flowing is probably the only real way to do it if you insist on using CNC machinery.

  • 2 years later...
Yeah I noticed that too. Two years old :)

I would be interested at a grand or less for CNC porting (knife edged etc)

But, would want before and after bench flow results of CNC porting to be used before sending the head over there.

http://www.skylinesaustralia.com/forums/Rb...20&start=20

bit more background as to whole topic and why i am so interested.

That pricing looks familiar to a site in the states that can provide all that. Also there are two places in the UK that do it day in day out.

One of the UK guys is an ex formula 1 engine builder / machinist

and the other place has been pioneering machining and building race engines since the 70's...

its just the cost factor to get it there etc...

I just want a guy that has a proven CNC program for the RB26DETT head with bench flow results. As for all the other bits n bobs a local machinist can do all the rest of the valve train installation and I would provide parts etc....

Need to find someone the a up to date Serdi machine and a RB CNC program with flow results to back it up.

Easy said then done.

rob

http://www.skylinesaustralia.com/forums/Rb...20&start=20

bit more background as to whole topic and why i am so interested.

well. actually Thornleigh cylinder heads in sydney that do our machining do have cnc for head porting and have done a whole heap of required calcs and testing to support. They aren't internet-y types so it would be best to call Anthony directly on 02 9875 5048

interesting to see if the proengines guys went ahead with this, but I'm wiling to guess not because we would have heard about it by now :(

We have these guys here in WA that can do it.

http://www.kostecki.com.au/cnc.php

Just around the corner from my place. Haven't looked in on them for RB stuff but, they have done some nice work for some mates engines.

Edited by rev210
well. actually Thornleigh cylinder heads in sydney that do our machining do have cnc for head porting and have done a whole heap of required calcs and testing to support. They aren't internet-y types so it would be best to call Anthony directly on 02 9875 5048

interesting to see if the proengines guys went ahead with this, but I'm wiling to guess not because we would have heard about it by now :(

No they dont, all their head porting is done by hand

  • 1 month later...

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

    • I should note too as I have all 4 wheel speed inputs to the emtron I now have the emtron controlling the attessa solenoid for 4wd/traction and launch control strategies. 
    • It works quite well with the adjustibility within each of the programs of the turbolamik. Essentially p1 is drive and lockup comes on like a normal driver.  But in program 7 I have customised it to not request the lockup clutch to engage until something like 6500/7 when slip was the lowest. 
    • Yep, I like that. The tags are only on the first post of a thread and we don't get huge numbers of new threads. Also, I plan to add some more report types and we could have a member report type like 'review tags' then members could flag if they thought a topic wasn't tagged correctly.  No way man, I dig the input. Thanks! 
    • It's a valid thought. There's not exactly that functionality already (when creating a thread) - that's where the OP can use/create any tag they want. We'd have to come up with a way for the user to request their tags get reviewed or something. Otherwise the mods would have to review every new post's tags (for those that have them, anyway). There's kind of that functionality already exists to some extent, post facto of starting the thread, where the OP or any other user could report the post to admins, and request that tags get reviewed. We could do this already, and any user could already have made such a request. To make it a part of the forum proper, it would require an initial and an ongoing education programme, so that people know that it's a thing. OP based tagging/request for review would also require at least some (probably most) of the user base to be told that it's a thing they can do. Both of these things probably wouldn't spread too far and/or get used very much. If it was the standard approach on a lot of different sites, then it might do, because people would be used to it. Prank's approach to this differs from my original thought, by leaning into tagging. Which is fine - it's possibly better than what I originally suggested. In fact, I just went to the R32 GTR wiring diagram thread and added tags, including "Library". That's probably a good way to use tags and the idea of a library. We just have to drag together an (organised!) index of threads or posts that have that tag. I have yet to do any of my own follow up by pursuing worthy threads and posts and reporting/marking/tagging them for the library, such as the @Sydneykid stuff I was talking about, and possibly any amount of @Lithium 's and others' posts. At least if I tag them Library, we'll have a start.   Back to @Wazmond's idea as it relates to @PranK's, we might have some sort of a list of tags that are already used to scrape for this library. I'm not entirely sure how that would be presented or used, particularly if it got long. But it's yet another idea!   cheers
    • Just a thought, but instead of restricting, is it possible to do like an "up for review" kind of thing? Where say someone who's not an admin/mod tags, it would require approval for it to actually tag? User posts with a 'tag' > Admin/Mod Reviews > Approves tag > Tag now exists kinda thing? Just came across this thread so Im not too sure if Im straying off topic or not but forgive me if i am...
×
×
  • Create New...