Interesting Intake Manifold Design
08-11-2009, 03:57 PM
#81
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,338
Total Cats: 573
There's the issue with backpressure, though I guess pulling a constant vacuum on a chamber with enough volume would "fill" on each cylinder.
Yeah - I was thinking 7,000 rpm equivalent. 10,000 he'd need shim under bucket. :-) I'd love to know when one needs that since... my bottom end can handle it and I'd like to not trash the head.
Yeah - I was thinking 7,000 rpm equivalent. 10,000 he'd need shim under bucket. :-) I'd love to know when one needs that since... my bottom end can handle it and I'd like to not trash the head.
Reply
0
0
08-11-2009, 07:22 PM
#82
Junior Member
Join Date: Jul 2009
Posts: 89
Total Cats: 0
Estimated plenum volume is going to be 4Liters so I don't think anyone is going to run into a lack of volume for high rpm, or big boost... I received the 1.6L intake manifold and things look very promising for coming up with something that will produce ALOT more power.
I have some questions that need to be determined by the majority rule now,
What throttle body should this be standard to use, also how bolt on does this need to be?
The way I typically make intake manifolds is to use a more or less universal throttle body bolt pattern being the ford which allows for a large selection of throttle bodies to be ran, after that is said I don't typically put factory iacv and stuff like that on the plenums, I just have 4 1/4" npt fittings at the end cap and allow people to run those to what they need.
My goal here is not to satisfy 1 single person but instead the majority of people as I have learned that business is best ran by covering a group rather than a select few.
So now it is time for the suggestions to pure in...
Also any houston guys please get in contact with me as when I have a finished piece I would love to do so dyno testing before I release it, as stated before I get 24/7 dyno access from my best friends shop and he just so happens to be well known for tuning 800+ hp cars so I am sure he can handle the job.
-James
I have some questions that need to be determined by the majority rule now,
What throttle body should this be standard to use, also how bolt on does this need to be?
The way I typically make intake manifolds is to use a more or less universal throttle body bolt pattern being the ford which allows for a large selection of throttle bodies to be ran, after that is said I don't typically put factory iacv and stuff like that on the plenums, I just have 4 1/4" npt fittings at the end cap and allow people to run those to what they need.
My goal here is not to satisfy 1 single person but instead the majority of people as I have learned that business is best ran by covering a group rather than a select few.
So now it is time for the suggestions to pure in...
Also any houston guys please get in contact with me as when I have a finished piece I would love to do so dyno testing before I release it, as stated before I get 24/7 dyno access from my best friends shop and he just so happens to be well known for tuning 800+ hp cars so I am sure he can handle the job.
-James
Reply
0
0
08-11-2009, 07:28 PM
#83
IIRC 70 mm Mustang throttle bodies seem to be the favorite. I wouldn't worry to much about a IAC. If you can't find anyone local to dyno ID be more then happy to bolt one on and run to the dyno. I just dyno'd a month ago and don't plan to make any changes until I get a new intake mani.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Reply
0
0
08-11-2009, 07:48 PM
#84
Junior Member
Join Date: Jul 2009
Posts: 89
Total Cats: 0
I noticed there is a passage on the head flange, it looks like a water port, is this something I can block off (I am assuming it is throttle body heater)?
Also how high rpm do the 1.6L rev to? This will determine runner lengths.
Also how high rpm do the 1.6L rev to? This will determine runner lengths.
Reply
0
0
08-11-2009, 07:53 PM
#85
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Reply
0
0
08-11-2009, 07:56 PM
#86
When you come up with Miata intake drawings id suggest starting a new thread in the engine section so there less to scroll through.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Reply
0
0
08-11-2009, 08:05 PM
#87
Junior Member
Join Date: Jul 2009
Posts: 89
Total Cats: 0
Ok
More questions..
Where do you want the manifold tuned to?
Low RPM
Mid Range
High RPM?
Do yall want a bracket to hold the throttle cable or no?
Obviously the less of these little nitpicky things the quicker the construction and the lesser the price. I just need to know if people would be happy with the barest minimum or will I need to include everything including a set of instructions?
More questions..
Where do you want the manifold tuned to?
Low RPM
Mid Range
High RPM?
Do yall want a bracket to hold the throttle cable or no?
Obviously the less of these little nitpicky things the quicker the construction and the lesser the price. I just need to know if people would be happy with the barest minimum or will I need to include everything including a set of instructions?
Reply
0
0
08-11-2009, 08:11 PM
#88
Ok
More questions..
Where do you want the manifold tuned to?
Low RPM
Mid Range
High RPM?
Do yall want a bracket to hold the throttle cable or no?
Obviously the less of these little nitpicky things the quicker the construction and the lesser the price. I just need to know if people would be happy with the barest minimum or will I need to include everything including a set of instructions?
More questions..
Where do you want the manifold tuned to?
Low RPM
Mid Range
High RPM?
Do yall want a bracket to hold the throttle cable or no?
Obviously the less of these little nitpicky things the quicker the construction and the lesser the price. I just need to know if people would be happy with the barest minimum or will I need to include everything including a set of instructions?
All of the above if possible, but mid to high since most of us do suffer from serious torque drops up top with stock intake manifolds. Yes, we definitely would want a bracket for the throttle cable. If anyone needs instructions they need to start taking the bus.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Reply
0
0
08-11-2009, 08:19 PM
#89
Junior Member
Join Date: Jul 2009
Posts: 89
Total Cats: 0
Well you never know, on the instructions thing lol I have had some pretty crazy phone calls on how to do the simplest of things.
I will go ahead and do the throttle bracket.
By the way you said the powerband drops on the high end it sounds like I should try to help out there the most so I will keep things in the mid-high end range for post part.
I will go ahead and do the throttle bracket.
By the way you said the powerband drops on the high end it sounds like I should try to help out there the most so I will keep things in the mid-high end range for post part.
Reply
0
0
08-11-2009, 08:20 PM
#90
You might find some folks would prefer the IAC - though isn't that built into any of the throttle bodies?
Also, not saying you shouldn't make a 1.6 version, but the 1.8 version would support 10 years of car, the 1.6 only a couple. If I were in it MERELY to sell as many units as possible, that's what I'd make.
Then again, selfishly, I'd say practice on the 1.6 and when you have it down make a 1.8 version. :-)
Also, not saying you shouldn't make a 1.6 version, but the 1.8 version would support 10 years of car, the 1.6 only a couple. If I were in it MERELY to sell as many units as possible, that's what I'd make.
Then again, selfishly, I'd say practice on the 1.6 and when you have it down make a 1.8 version. :-)
Reply
0
0
08-11-2009, 08:21 PM
#91
Junior Member
Join Date: Jul 2009
Posts: 89
Total Cats: 0
Ohh got a important one here,
What is the distnace between the intake valve seat and the port flange surface?
This is calculated into the overall primary length and to get things accurate I need an accurate measurement here as well.
What is the distnace between the intake valve seat and the port flange surface?
This is calculated into the overall primary length and to get things accurate I need an accurate measurement here as well.
Reply
0
0
08-11-2009, 08:36 PM
#94
I have a head at the shop I can measure on for you tomorrow. Call me when you get in, you should have my number in your email.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Reply
0
0
08-11-2009, 08:39 PM
#95
Stock injector, I can send you one tomorrow.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Reply
0
0
08-11-2009, 08:40 PM
#96
You might find some folks would prefer the IAC - though isn't that built into any of the throttle bodies?
Also, not saying you shouldn't make a 1.6 version, but the 1.8 version would support 10 years of car, the 1.6 only a couple. If I were in it MERELY to sell as many units as possible, that's what I'd make.
Then again, selfishly, I'd say practice on the 1.6 and when you have it down make a 1.8 version. :-)
Also, not saying you shouldn't make a 1.6 version, but the 1.8 version would support 10 years of car, the 1.6 only a couple. If I were in it MERELY to sell as many units as possible, that's what I'd make.
Then again, selfishly, I'd say practice on the 1.6 and when you have it down make a 1.8 version. :-)
If someone wants to send him a 1.8 mani I'm sure he'd make it.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Reply
0
0
08-11-2009, 09:57 PM
#97
Junior Member
Join Date: Jul 2009
Posts: 89
Total Cats: 0
I would prefer either sticking to stack miata or bosch type instead of mixing in other injectors.
I have your number I am at home right now I will call you tomorrow from the shop.
I dont really need the head itself just the measurement, however if port sizing on the head is very different from the manifold then it might not hurt for me to measure off the head because that is what it is important that we match the ports to. However if most people like to resize the stock ports I would need some idea of what to size the ports to so that we can machine them to that instead.
I have your number I am at home right now I will call you tomorrow from the shop.
I dont really need the head itself just the measurement, however if port sizing on the head is very different from the manifold then it might not hurt for me to measure off the head because that is what it is important that we match the ports to. However if most people like to resize the stock ports I would need some idea of what to size the ports to so that we can machine them to that instead.
Reply
0
0
08-11-2009, 10:08 PM
#99
ok, stock injectors is best.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Reply
0
0
08-12-2009, 01:48 AM
#100
Huh. Well, there's a guy on here who wants one of my spare mani's to try gutting. But I could send it, with or without stock injectors, if you cover shipping. :-) I will someday be in the market for an upgraded mani, but not yet. If you get serious about 1.8's let me know.
Reply
0
0
