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  #11  
Old 21-03-2016, 07:00 AM
Richard L Richard L is offline
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Default Re: Questions on my direct port meth setup

The red marks are good.
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  #12  
Old 22-03-2016, 10:22 AM
parmas parmas is offline
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Default Re: Questions on my direct port meth setup

Quote:
Originally Posted by robos4 View Post
Hey Parmas,

Sorry I meant I had problems without meth on the stock engine (when I rebui8lt it), cyl 4 was damaged due to running too lean. It must be a poor design from the intake manifold as it's obviously not getting equal flow. (the injectors were flow tested and came back fine).

Putting a jet just before throttle body in my mind wouldn't help me cure my cylinders receiving un even flow still.

Rob

You are using stock intake right?

Are you saying that Mitsubishi designed a poor design?

If that is the case I would consider making a custom one that will provide equal flow to all the cylinders and use one pre throttle body.

Water/meth could help but the setup is not right.
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  #13  
Old 23-03-2016, 01:02 AM
robos4 robos4 is offline
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Default Re: Questions on my direct port meth setup

Thanks Parmas,

Sorry, so you are saying my meth setup is not right?

I would imagine most people chasing bigger power goals would go with nozzles in the IC pipe pre throttle body (and possibly in the manifold too) but I'm primarily going to use it for knock control.

Well, it's a fun project and it should all be complete and tuned by next week.

- Stock it gets 215whp

- Stock engine and bolt on's with HKS 7460 turbo got me 348whp (1.75bar)

- HKS stroker, MX1 cams, oversized valves, PNP, CBRD 7163 turbo kit, got me 424whp but I didn't set the IWG properly and wasn't holding boost..

- Now adding external fuel pump, larger intake, meth kit and firmer wastegate tune next week and shooting for 450-460whp.

Rob
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  #14  
Old 23-03-2016, 10:24 AM
parmas parmas is offline
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Default Re: Questions on my direct port meth setup

I meant not tight to use a known unbalanced intake manifold and use water injection to "balance" the mixture
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  #15  
Old 24-03-2016, 04:32 PM
robos4 robos4 is offline
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Default Re: Questions on my direct port meth setup

Guys,

Need to know the best angle to install the nozzles?

I'm having bungs welded on the intake ports which means I can now drill the holes at an angle (rather than straight down into the pipe).

Seems to be two schools of thought from who I am talking to:

- 45deg facing with the flow (nozzles pointing towards the cylinders)
or
- 45deg facing into the flow (away from the cylinders) as to ensure it mixes better before hitting the combustion chamber.

Or I guess I could still just go straight 90deg down into the pipes.

What's the answer??

Thanks
Rob
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  #16  
Old 24-03-2016, 05:02 PM
parmas parmas is offline
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Default Re: Questions on my direct port meth setup

I would position the nozzles similar to the fuel injector position made by factory.

If cannot be done as above I would make them at the bottom bend of the intake manifold
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  #17  
Old 26-03-2016, 12:39 AM
robos4 robos4 is offline
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Default Re: Questions on my direct port meth setup

Thanks Parmas,

Richard/Rotrex - what do you think also?

90% of the pics out there of direct port setups have straight down 90deg and the other 10% have it setup like the fuel injectors facing towards the cyclinders.

Also, machine shop came back and places the holes about 1" lower from the original pic I showed you but doing it again with bungs welded.
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  #18  
Old 27-03-2016, 04:43 AM
robos4 robos4 is offline
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Default Re: Questions on my direct port meth setup

anyone?

I am drilling the manifold tomorrow.
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  #19  
Old 27-03-2016, 07:24 AM
parmas parmas is offline
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Default Re: Questions on my direct port meth setup

Quote:
Originally Posted by robos4 View Post
anyone?

I am drilling the manifold tomorrow.
Do you think there is a better person than a Mitsubishi engineer designer here?

I think the best option is just in front your eyes.... no need for any suggestions.

Notice the fuel injectors position/angle and make it similar if not the same whenever possible.

Good luck .... and post results and pics in return
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  #20  
Old 27-03-2016, 07:58 AM
robos4 robos4 is offline
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Default Re: Questions on my direct port meth setup

Cheers,

No offense - always good to hear other opinions and it's the Internet after all did not know you were so educated in all this (my bad).

Just told workshop to follow your recommendations.

Hoping to have it all done by Fri and hopefully start tuning.

I was thinking of setting the spray to start about 30 to max 50% of what could be sprayed (not looking for huge power).

If you disagree, let me know.

Rob

Ps. Will absolutely share results and findings.. Who knows, part of me thinks it won't work (cause less power, can't find the right mix of spray v timing and fuel, meth sucking the lines causing rich spot after lift off, too larger jets etc)
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