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Old February 24th, 2008, 09:35 PM   #31
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But then again as NVA-AV6 mentioned earlier, a bigger TB can only do so much when you're head doesn't flow.

The A1 head has relatively small intake valves which means that despite a larger throttle body the valves will only allow "x" amount of air to be introduced into the cylinders. So, the weak link of the AV6 isn't neccesarily the throttle body, but the small valves.

I would imagine that you'd only see a very small increase in throttle response and high RPM horsepower, maybe 2 or 3. Someone correct me, if I'm mistaken.
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Old February 25th, 2008, 12:50 AM   #32
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you should also bore out the IM inlet...otherwise the bigger TB isn't doing much...since the air is going through the same small opening in the IM as before.
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Old February 25th, 2008, 04:36 AM   #33
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Well we know t fits for sure. I just tried on the J30 SC elbow on the J32 IM and its all go. Theres a drastic diference in intake valve size.
Qucik comparo:
J30A1: 30mm
J30A4: 35mm
J32A2: 36mm

Most Honda V6's are using 36mm now if notat least 35mm, so as you can see not much hope there
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Old February 25th, 2008, 04:54 AM   #34
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^J35A4: 35mm


Now a good upgrade to the J30A1 would be to get a pair of J35A4 heads, intake runner, IM and TB from a 03-04 pilot or oddy, these ar common and relitivly cheap compared to J32A2 componets, and the J35 IM does not have the butterflies to have to deal with, this would then greatly increase the breathing of the J30A1. Then if you wanted to you could add a set of CL-S cams.
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Old February 25th, 2008, 05:01 AM   #35
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Quote:
Originally Posted by NVA-AV6 View Post
^J35A4: 35mm


Now a good upgrade to the J30A1 would be to get a pair of J35A4 heads, intake runner, IM and TB from a 03-04 pilot or oddy, these ar common and relitivly cheap compared to J32A2 componets, and the J35 IM does not have the butterflies to have to deal with, this would then greatly increase the breathing of the J30A1. Then if you wanted to you could add a set of CL-S cams.
Kind of makes you want to get a new car
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Old February 25th, 2008, 10:26 AM   #36
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I'm kind of hoping my J30A1 takes a $hit on me so I can have an excuse to do a full J32A2 swap and a Dr. Evil 5AT transmission. I think 260hp in a car as light as the AV6 will feel pretty good, eh Nick? lol

Just to answer the question before it's asked, I'd rather have an automatic tranny as this is my daily, I'm trying to pick up a rolling chassis 3rd gen RX-7, so that will be my speed machine.
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Old February 25th, 2008, 08:40 PM   #37
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Originally Posted by NVA-AV6 View Post
^J35A4: 35mm


Now a good upgrade to the J30A1 would be to get a pair of J35A4 heads, intake runner, IM and TB from a 03-04 pilot or oddy, these ar common and relitivly cheap compared to J32A2 componets, and the J35 IM does not have the butterflies to have to deal with, this would then greatly increase the breathing of the J30A1. Then if you wanted to you could add a set of CL-S cams.
How cheap we talking, and what kinda power? i just put cl-s cams in my heads =P

so your saying
Heads J35A4
Full intake, rail and pres from j35a4

And my j32a2 cams will fit?

What the hell kinda power is that going to produce?!
I might even consider doing this for the hell of it,
Any problems or work arounds required?
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Old February 25th, 2008, 09:14 PM   #38
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How cheap we talking, and what kinda power? i just put cl-s cams in my heads =P

so your saying
Heads J35A4
Full intake, rail and pres from j35a4

And my j32a2 cams will fit?

What the hell kinda power is that going to produce?!
I might even consider doing this for the hell of it,
Any problems or work arounds required?
Should not be any problems and yes you CL-S cams will fit and no you do not need the fuel rails, just the heads, runners, IM and TB, the rest you can use strights from the AV6. I would re-grind that valves in and use a J35A4 head gasket set, the J30A1 intake/head gaskets will not work, the intake ports are much bigger on the A4 parts. AS far as power it should bring you up alot closer to J30A4, but it will still be a little less due to the 9:1 copression vs the J30A4 10:1, but with I/H/E should get you close to 200WHP, and yes the J30A1 headers and exhaust should work.
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Old February 26th, 2008, 07:11 AM   #39
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Originally Posted by NVA-AV6 View Post
Should not be any problems and yes you CL-S cams will fit and no you do not need the fuel rails, just the heads, runners, IM and TB, the rest you can use strights from the AV6. I would re-grind that valves in and use a J35A4 head gasket set, the J30A1 intake/head gaskets will not work, the intake ports are much bigger on the A4 parts. AS far as power it should bring you up alot closer to J30A4, but it will still be a little less due to the 9:1 copression vs the J30A4 10:1, but with I/H/E should get you close to 200WHP, and yes the J30A1 headers and exhaust should work.
No valve to piston greetings?
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Old February 26th, 2008, 07:35 AM   #40
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^No, especially with the low compression of the J30A1. Hell if you have some time when you do it, clay it to see the exact clearence and if the heads can be milled to bring the compression up.
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Old February 28th, 2008, 11:39 AM   #41
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Originally Posted by whtonblkv6 View Post
I'm kind of hoping my J30A1 takes a $hit on me so I can have an excuse to do a full J32A2 swap and a Dr. Evil 5AT transmission.

i don't think there's a 5AT from Dr. Evil...is there?
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Old February 28th, 2008, 12:03 PM   #42
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Yup, $4200 was what I was quoted 6 mths ago.
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Old February 28th, 2008, 02:34 PM   #43
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Yup, $4200 was what I was quoted 6 mths ago.
A price that high would have me looking at a 6spd swap with an electron microscope
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Old February 28th, 2008, 06:35 PM   #44
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Exactly why I decided to go the 6sp route.
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Old March 14th, 2008, 11:35 AM   #45
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In Regards To The Benefits Of A Larger Throttle Body With Stock Size Heads And Intake- There Is A Benefit( But You Still Have To Port Match The
Opening( Outlet ) Of Throttle Body To Manifold Port To Remove The "step " Difference Between The Two- The Increase In Hp And Torque Will Be In The Midrange And Top End Because The Throttle Plate Still Determines How Much Airflow Your Allowing In- And Valves Still The Same- Bottom Line- You Are Reducing A Restriction( Just Like Exhaust Flow With A Catback ) Only In Reverse. Question Is: Calibration Of Sensors- Any Differences Are Hopefully Within Parameters And Are Self Adjusting. PS. I have an 02 coupe and I am going to do it also...( i work in the automotive field ( wholesale and retail automotive parts incl machine shop )

Last edited by SILVER3.0BULLIT; March 14th, 2008 at 11:39 AM.. Reason: omitted info by accident
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Old March 18th, 2008, 08:08 AM   #46
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Cool Cl & Cls Throttle Body Vs Accord V6 Tb

I have been reading the forums recently for more information on this issue, and this is what I have found: cl/tl type s throttle body is larger than regular cl/tl. regular cl/tl t body is larger than accord v6- ( I spoke with p2r racing in fla) so the
best gains are going to a cl-type s( without boring out- the upper intake and ports are the next limiting factor in making power. if you get the reg cl/tl t body, then have it bored to be as large as type s. if you get your accord t body bored, it will never be as big as cl/tl type s( without making walls too thin and weak.)( besides- they can only remove so much material, so you might as well start with a larger unit, and improve on that one.( but remember to port match the opening- outlet of t body to upper manifold opening - with a dremel tool, being careful to block opening with a clean rag to avoid debris from entering engine.) there should be no step between t-body to manifold transition, to avoid turbulence. (use the gasket as a template for a guide.) hope this helps.
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Old March 18th, 2008, 03:36 PM   #47
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Quote:
Originally Posted by NVA-AV6 View Post
^J35A4: 35mm


Now a good upgrade to the J30A1 would be to get a pair of J35A4 heads, intake runner, IM and TB from a 03-04 pilot or oddy, these ar common and relitivly cheap compared to J32A2 componets, and the J35 IM does not have the butterflies to have to deal with, this would then greatly increase the breathing of the J30A1. Then if you wanted to you could add a set of CL-S cams.
How much will this run for. I want to get the most out of a NA engine. If anything PM me or IM. Appreciate it.
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Old March 21st, 2008, 11:41 PM   #48
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bump... on knowing how much of a project like I stated above would cost me and where to get such parts used or new. Don't matter. Thanks.
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Old April 5th, 2008, 02:24 PM   #49
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^No, especially with the low compression of the J30A1. Hell if you have some time when you do it, clay it to see the exact clearence and if the heads can be milled to bring the compression up.
Has nobody milled the head to bring the compression up yet?
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Old May 30th, 2008, 01:54 AM   #50
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Stock av6 is 58mm (measured from my 98)

TL-P is 64mm (measured from 00 TL-P)
TL-S is 68mm


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Originally Posted by Lxcord View Post
i think this is a better deal

http://www.maxbore.com/

J30A1 stock TB size is 60mm(although 02AV6 said its 58mm)

He bores out your existing TB + intake maifold for $165, also there is no core charge.

my only question is if i send my TB + intake manifold to him, and he bores it to 68 mm(same size as CL-S TB), can i use my existing Volant intake to fit the bored out tb ?

I love my current Volant SRI, so i am wondering how one would solve this problem ?
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Old May 9th, 2009, 12:57 AM   #51
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Quote:
Originally Posted by NVA-AV6 View Post
^J35A4: 35mm


Now a good upgrade to the J30A1 would be to get a pair of J35A4 heads, intake runner, IM and TB from a 03-04 pilot or oddy, these ar common and relitivly cheap compared to J32A2 componets, and the J35 IM does not have the butterflies to have to deal with, this would then greatly increase the breathing of the J30A1. Then if you wanted to you could add a set of CL-S cams.
paul do u know the part #'s for the heads, intake tunner, im n tb that u mentioned?
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Old January 4th, 2017, 10:17 PM   #52
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What is the stock size of the j35a4 in the 04 odyssey? And what is the tl-p? I know the tl-s is the type s...i pulled a throttle body from a 2002 tl type s and it was 64mm
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Old January 14th, 2017, 07:42 PM   #53
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And the big boys answer. Recently, I add pulley kit no ac, port intake and exhaust heads, straight pipe headers and cat, turbo ready but I strip my head bolt because I looked at blue prints wrong I titen to nm instead of pound per foot this sucks. high pressure fuel pump, rims, gauges. how do I add pics ?
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