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Old 02-09-2011, 03:48 PM   #481
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Don't port your TB, you'll have huge intake leaks and won't keep the idle below 3k
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Old 02-09-2011, 04:26 PM   #482
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Quote:
Originally Posted by Faeflora View Post
I cannot wait to put the IM on the car.

Today, I measured the volume of the reamed out intake with water:

Neck: 1.5c
Upper plenum: 6c
Runners: 5.5c
Lower plenum: 3.5c

So, adding together the volume of the upper and lower plenums we get 9.5c which = 2.25L. If you add in the neck volume we get 11c which = 2.6L I think this is pretty darn good!!!- approaching 2.85L which is "ideal" assuming 1.5x displacement is a good plenum size.

I also measured the "neck" outlet in my plenum. It's 70mm in diameter. The "neck" inlet at the throttle body flange is actually 60mm.

Hmm. That's pretty close to what I was going for. I think I will try to use the stock TB and see how it does. I might try to port the TB outlet some to match. That will save the PITA of making new coldside IC tubing and getting a pipe and flange welded on and making the new TB work.

I want to put this **** on my car right naow. I just got my COPs working and went for a drive yesterday. Time to take it off the road again...
i cant wait to see what the car will do with this new intake manifold!!!!1
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Old 02-09-2011, 04:27 PM   #483
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what is the length of the runners?

If you wanna port the TB, use maxbore.com
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Old 02-09-2011, 04:47 PM   #484
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Whats the point of bottlenecking your newly ported mani with a stock tb?
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Old 02-09-2011, 06:03 PM   #485
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Quote:
Originally Posted by richyvrlimited View Post
Don't port your TB, you'll have huge intake leaks and won't keep the idle below 3k
??? oh I guess that will happen if like a douche you hollow out the whole thing and your butterfly can't seal the pipe.

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Originally Posted by Braineack View Post
what is the length of the runners?

If you wanna port the TB, use maxbore.com
maxbore looks pretty cool. I wasn't thinking of a full TB port. Just radius the outlet of the TB to transition to the 60MM inlet. Will also cut the gasket to match. (waiting for it...)

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Whats the point of bottlenecking your newly ported mani with a stock tb?
stock tb will still flow... 5000 I mean 500hp has been attained on super stock miata IM and TB. Not mad 70mm flow but it will still work and if lameness occurs on the dyno readout I can whip out my sawbaby and go to town.

With my current turbo, if I had eliminator's luck and tune I could hit 570!!!!!!! He had the old garrett T3 50 trim which is only rated at 46 lbs/minute and mine is about the same so maybe I will hit 570hp too. but yah right seriously now, on a dyno dynamics I hope to hit 100hp below that. my secret plan is to go for 32lbs of boost and overspool the poor little GT30 and only stop when the turbo bearings catch on fire. hopefully that would put me in the upper 400s...

blah blah blah so New Plan is to try to polish this thing up a bit and bolt it on. Let's hope no dramedy ensues with that process because I want to go for round 2 of dyno tune next week. I have never taken the intake off with the engine still in the car. I am afraid.
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Old 02-09-2011, 06:17 PM   #486
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You should just hacksaw the engine and make it a v4 for ultimate torqz
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Old 02-09-2011, 09:07 PM   #487
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Pinto V4 swap anyone?
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Old 02-09-2011, 09:41 PM   #488
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**** that.

If I blow this motor I am going to swap a turbo diesel motor into my miata. I'm serious.
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Old 02-09-2011, 11:48 PM   #489
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No deisel but I do see a 1J in your future.lol
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Old 02-10-2011, 09:14 AM   #490
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A turbo diesel Miata, now that would be interesting to see.
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Old 02-10-2011, 09:34 AM   #491
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Sr20det?
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Old 02-10-2011, 11:22 AM   #492
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do it, a cummins 4bt would be sweet! Heavy as all hell though....
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Old 02-10-2011, 11:36 AM   #493
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Naw just a jetta 1.9 would be plenty
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Old 02-10-2011, 12:50 PM   #494
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Naw just a jetta 1.9 would be plenty
This.

Easy 250hp w/ 400+trq
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Old 02-10-2011, 02:53 PM   #495
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Hells yea little diesel little car means massive TQ and lots of tire burning.
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Old 02-10-2011, 03:23 PM   #496
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Hmm that would be great. I could have the first tractor pull miata
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Old 02-10-2011, 07:41 PM   #497
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Hmm that would be great. I could have the first tractor pull miata
this could get really searious lol
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Old 02-12-2011, 04:43 PM   #498
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this could get really searious lol
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Old 02-13-2011, 04:23 PM   #499
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Got the intake welded up today, port matched, smoothed out some and shined up a bit. I put it on my car and it did a wheel stand right away! Here is a pic



Next I gotta do a log and see how AFRs are affected.

Also, I think I am going to let this IM be the harbinger of my new engine bay decor. I'm going to go for black, silver, and gold. This should look better than my old scheme of black, black, black, black, black, and purple.

Last edited by Faeflora; 02-13-2011 at 04:49 PM.
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Old 02-13-2011, 04:27 PM   #500
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hmm....in for results
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