Climber Posted August 27, 2016 Share Posted August 27, 2016 Why not just port the factory intake to your specs?? Do you just want the custom smooth ally look or do you want performance? Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted August 27, 2016 Author Share Posted August 27, 2016 The stock manifold is less than ideal as far as airflow distribution - particularly to cylinder #1. Quote Link to comment Share on other sites More sharing options...
Climber Posted August 28, 2016 Share Posted August 28, 2016 I'm hoping my new design changes that, I'm experimenting with the plenum on my n42. And the throttle body placement and size of throttle body on my turbo zx. Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted August 28, 2016 Author Share Posted August 28, 2016 Interesting Climber... Will have to keep an eye on what you come up with... As I might have stated, because I will have a GM 4L60E behind the engine I am imposing a 6K rpm limit. Combined with my preference to use my hydraulic lifters I am looking to maximize flow throughout the stock rpm range. Hence the anti-reversion step and need for a custom plenum. I have scoped out a supplier for tapered runners and velocity stacks. Am thing the stacks that protrude into the plenum and runners that taper down to ~33-34mm and of course well ported heads will combine to work to make ~400 up at a relatively low boost. As guru TonyD has so often said - it's the PACKAGE as a whole that determines success or failure. I can't help but think that a custom manifold would be better than trying to work with the stock one. Quote Link to comment Share on other sites More sharing options...
NewZed Posted August 28, 2016 Share Posted August 28, 2016 Your basic problem is that you're ready to argue intake manifold and engine theory with CPC but you are far from being an expert. You're bringing a load of internet "knowledge" and turbulence in to his shop and, obviously from this thread, will be ready to blast his work on the internet if the internet theory doesn't pan out. Considering all, he seems like a smart businessman. He's thinking long-term, not quick easy money. Your displeasure would have more weight if you had tried other shops and CPC was the only one that refused. Shop your proposal around and see who bites. Quote Link to comment Share on other sites More sharing options...
Climber Posted August 28, 2016 Share Posted August 28, 2016 There is an Australian billet 2jz intake builder on eBay I talked to. Told me he could build a billet 2jz plenum with runners to a L28 head flange. I am going to have them build me one. I don't think they will tell you no on your specs, like the other guys.. Quote Link to comment Share on other sites More sharing options...
HuD 91gt Posted August 28, 2016 Share Posted August 28, 2016 Fill us in on the information you come up with. I could be in for one as well. Quote Link to comment Share on other sites More sharing options...
volodkovich Posted August 28, 2016 Share Posted August 28, 2016 If CPC thinks that a 1mm anti-reversion step at the manifold flange will cause 'more turbulence and a restriction to flow at the port' then maybe its a good thing you are not getting one from him? That's not really something you want to hear from someone selling $5000 aftermarket manifolds. Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted August 29, 2016 Author Share Posted August 29, 2016 NewZed - apparently you are reading something into my posts that I did not put there. I have simply said that I am disappointed that they do not wish to build an intake to my specifications backed by not only real world experience as testified to by others on this forum but by racers and hot fodder since the 60's when I first started working on our '65 Mustang convertible. I have no problem with their right to refuse the work. I just don't think their reasoning was very well thought out. It appears that they are after that last % in power and don't want to associate with all-round performance. If they did then their comments about my request for an anti-reversion step for what is to be a max 6k rpm engine used as a daily driver being against their principles/experience seems not only narrow-minded but flies in the face of what others experience has been. Please don't go putting words in my mouth. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.