Is the 3.5 Intake manifold worth it?

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Old 12-27-2020, 09:57 PM
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Is the 3.5 Intake manifold worth it?

I already have hfpc's and J Pipe installed on my 5AT TL would it be worth it to install a 3.5 intake manifold? I read that it should be plug and play compared to the 3.7 im and tb mod I figured if I can get a 3.5 manifold at the junkyard it'd be worth the squeeze?
Old 12-27-2020, 10:08 PM
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is a few and I mean a few like 2 hp worth it to you? I think the biggest advantage of the 3.5l manifold is that it's lighter because it's made out of a different material than the 3.2l manifold...but again, is a few lbs worth it to you?

also, if you have the ability to tune, then you can squeeze even more power out of it...

Last edited by justnspace; 12-27-2020 at 10:10 PM.
Old 12-27-2020, 10:23 PM
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Originally Posted by justnspace
is a few and I mean a few like 2 hp worth it to you?
That depends would that 2 hp even be noticeable?
Old 12-27-2020, 10:26 PM
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butt dyno def would notice it.
Old 12-27-2020, 10:32 PM
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If I was going to go to all of the bother of swapping the intake manifold on my J32A3 engine with one from a J35, I wouldn't stop at just the manifold, I'd keep on going until an entire J35A6 or even a J35A8 was in my engine bay.
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Old 12-27-2020, 10:46 PM
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Those would fit in my base 05 Tl AT without an issue? I do have a swapped jdm transmission in it as well at the moment
Old 12-27-2020, 11:24 PM
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https://www.google.com/search?client...manifold+3g+TL


tons of threads on this already, have a gander
Old 12-27-2020, 11:25 PM
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Originally Posted by Glorygang600
Those would fit in my base 05 Tl AT without an issue? I do have a swapped jdm transmission in it as well at the moment
The J35A6 is a bolt for bolt and sensor for sensor drop-in replacement for the J32A3 in your car; no need to swap the transmission. Speaking of which, the best of the H5 transmissions is the BAYA unit from the 2006-2007 Honda Accord V6 models, and this unit is by definition a USDM transmission; all other bolt compatible H5 transmissions which will fit your car are considered less reliable, including any JDM unit.

As for the J35A8, given you have an automatic transmissions, this engine is not an option for you as the only 2004-2006 TLs this engine can easily be dropped into are the 6MT models (which will require a 2007-2008 Type-S bellhousing).
Old 12-27-2020, 11:52 PM
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Originally Posted by horseshoez
The J35A6 is a bolt for bolt and sensor for sensor drop-in replacement for the J32A3 in your car; no need to swap the transmission. Speaking of which, the best of the H5 transmissions is the BAYA unit from the 2006-2007 Honda Accord V6 models, and this unit is by definition a USDM transmission; all other bolt compatible H5 transmissions which will fit your car are considered less reliable, including any JDM unit.

Yeah I got a BAYA unit twas a pretty penny. Thanks for the info I've got a oil pressure leak going on if I cant fix it I might have to swap the engine out, if I do put an A6 ill still be able to add on 3.7 im and tb as well
Old 12-28-2020, 05:49 AM
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Originally Posted by Glorygang600
That depends would that 2 hp even be noticeable?
LOL no.

but sounds like you're gonna engine swap anyway
Old 12-28-2020, 09:05 AM
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Originally Posted by Glorygang600
Yeah I got a BAYA unit twas a pretty penny. Thanks for the info I've got a oil pressure leak going on if I cant fix it I might have to swap the engine out, if I do put an A6 ill still be able to add on 3.7 im and tb as well
I strongly doubt the 3.7 manifold and throttlebody will do anything for your power, regardless of whether you are doing it to your 3.2 or a 3.5. The fact is, the Honda engineers aren't stupid, if such a simple change would increase the power of these engines, they would have done it from the beginning.
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Old 12-29-2020, 03:08 PM
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Originally Posted by horseshoez
I strongly doubt the 3.7 manifold and throttlebody will do anything for your power, regardless of whether you are doing it to your 3.2 or a 3.5. The fact is, the Honda engineers aren't stupid, if such a simple change would increase the power of these engines, they would have done it from the beginning.
Not exactly true.

They develop parts over time and realize new things. They also need to differentiate their cars and motors from one another to a degree. Either from using slightly different parts or from a detune. Just because they can make it more powerful than they can with other parts doesn't necessarily mean that they will.

It all comes down to the money. What it'll cost them to produce and market... And how many people they suspect will buy of each model.
Old 12-29-2020, 04:38 PM
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My point is, it is highly unlikely a 3.7 manifold on a 3.2 or 3.5 engine will make any more power, and I argue no, at least not a pony or two.
Old 12-29-2020, 06:29 PM
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I've got a type s manifold and personally I would only say it's worth it if you find one cheap and plan on porting it yourself. If not just wait for a j37 manifold and throttle body which from what I have seen is DYNO PROVEN to make MORE power. And it's honestly not very hard about a 15 min job my first time going into it with no prior experience. The hardest part is getting clamps off the hoses on the throttle body.

It barely makes any extra power and pretty much only looks better imo but I did notice a nice gain with ported runners, porting the bottom part of the type s manifold, and my throttle body.
There is a difference in type s vs some of the other j35 manifolds from what I've heard only the type s is magnesium and others are aluminum but I could be wrong

here's mine painted

Last edited by Wdp_3g; 12-29-2020 at 06:35 PM.
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Old 12-30-2020, 04:37 PM
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Originally Posted by horseshoez
My point is, it is highly unlikely a 3.7 manifold on a 3.2 or 3.5 engine will make any more power, and I argue no, at least not a pony or two.
5-7 whp bump on a fully bolted 3.5, no tune, after swapping just 3.7 mani and tb.

https://acurazine.com/forums/3g-tl-p...thread-870327/
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Old 12-30-2020, 07:18 PM
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Originally Posted by mdnborg
5-7 whp bump on a fully bolted 3.5, no tune, after swapping just 3.7 mani and tb.

https://acurazine.com/forums/3g-tl-p...thread-870327/
LOLz, I bet it isn't even close to that.
Old 12-31-2020, 12:27 AM
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Dyno proven as I stated above
Old 12-31-2020, 07:12 AM
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in the grand scheme of things; no one will be able to "feel" a gain of 7hp.
it would just be for bragging rights; ie; I went from 248whp to 255whp. ie; still in the average range of 250whp.

is it worth 100's of dollars to gain 5-7hp? no.
is it worth it for that individual who wants every ounce of power? maybe so.

When I first bought the car, I was chasing every ounce...every 1hp gain, boosted my ego.
that was when I was a young boy. 11 years later, I'm not chasing those 1hp increments any longer...
my ultimate goal has always been to boost...so, therefore i'm chasing 300hp increments. fuck 1hp increments.

just comes down to the individual and how much money they want to spend for 1hp...Although, it's fun modding a car regardless of power increase increments...
I enjoyed tinkering with my car even tho I spent thousands of dollars for only 1hp

Last edited by justnspace; 12-31-2020 at 07:18 AM.
Old 12-31-2020, 09:18 AM
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Originally Posted by Wdp_3g
Dyno proven as I stated above
Proves??? LOLz, yeah, how many days apart? What was the difference in OAT, humidity, and barometric pressure? All your chart shows is there was "something" which changed between your two runs, and even then, only up in the top 1,000 RPMs. Sorry, seriously unimpressed.
Old 12-31-2020, 10:22 AM
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Originally Posted by horseshoez
Proves??? LOLz, yeah, how many days apart? What was the difference in OAT, humidity, and barometric pressure? All your chart shows is there was "something" which changed between your two runs, and even then, only up in the top 1,000 RPMs. Sorry, seriously unimpressed.
If only you had looked at pages 3/4 of the link I posted you could have seen that he made back-to-back runs on the same day, only difference being Mani and tb.

Unfortunately I believe you discarded that thread/information before even looking at it.

Yes, this is with other supporting mods so it's not quite good for 7 whp by itself, but to say it's nothing is incorrect.
Old 01-01-2021, 08:08 AM
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Junkyard find. Gained 5hp and 4ft lbs torque after the 3.7 manifold and TB. Untuned.
Old 01-01-2021, 09:08 AM
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5hp ain't shit!
it takes about 15-30hp to be able to feel in a 3400lb car
Old 01-01-2021, 10:13 AM
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Originally Posted by justnspace
5hp ain't shit!
it takes about 15-30hp to be able to feel in a 3400lb car
Right its literally nothing to talk about but if OP just so happens to find one cheap at the junkyard why not. There is little to gain but to each is their own.
Old 01-01-2021, 10:18 AM
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Originally Posted by horseshoez
I strongly doubt the 3.7 manifold and throttlebody will do anything for your power, regardless of whether you are doing it to your 3.2 or a 3.5. The fact is, the Honda engineers aren't stupid, if such a simple change would increase the power of these engines, they would have done it from the beginning.
The thing i enjoy the most with the 3.7 combo is the tip in response. The car responds much better with very little throttle input and it doesn't have to downshift to get around traffic at least the way I drive/ cruise on the highway.
Old 01-01-2021, 10:31 AM
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LOLz, if you say so.
Old 01-01-2021, 10:37 AM
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Originally Posted by fullboost833
Right its literally nothing to talk about but if OP just so happens to find one cheap at the junkyard why not. There is little to gain but to each is their own.
Exactly, it's not worth the $5-800 people charge but if you find it at a junkyard why not. At my junkyard it's a $35 part. And if you know how to port it can be split completely open for more gains unlike the original 3.2 manifold most of us have.

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Old 01-01-2021, 02:35 PM
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right, if you can find it for a steal, then sure why not...why not have fun being creative and working with your hands, as its always fun to mess with car things...

however at $300-800, you dumb.
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Old 01-02-2021, 07:00 AM
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Originally Posted by justnspace
right, if you can find it for a steal, then sure why not...why not have fun being creative and working with your hands, as its always fun to mess with car things...

however at $300-800, you dumb.
Its a junkyard runners' market. This generation rather vlog and tweet than get their hands dirty so they gotta pay that convenience fee I guess lol.
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Old 01-04-2021, 03:05 AM
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Originally Posted by justnspace
right, if you can find it for a steal, then sure why not...why not have fun being creative and working with your hands, as its always fun to mess with car things...

however at $300-800, you dumb.
$300 is probably the tipping point WITH TB honestly. It's a lot of money if you buy them separately from all these resellers.

MAYBE worth it if you got big plans for the car but for everyday use... shit is expensive.
Old 03-21-2021, 11:56 PM
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Or for a few hundred $ more, you could buy a bolt on M90 kit, set it up in one day and have 150whp more.
Old 03-21-2021, 11:57 PM
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Originally Posted by justnspace
in the grand scheme of things; no one will be able to "feel" a gain of 7hp.
it would just be for bragging rights; ie; I went from 248whp to 255whp. ie; still in the average range of 250whp.

is it worth 100's of dollars to gain 5-7hp? no.
is it worth it for that individual who wants every ounce of power? maybe so.

When I first bought the car, I was chasing every ounce...every 1hp gain, boosted my ego.
that was when I was a young boy. 11 years later, I'm not chasing those 1hp increments any longer...
my ultimate goal has always been to boost...so, therefore i'm chasing 300hp increments. fuck 1hp increments.

just comes down to the individual and how much money they want to spend for 1hp...Although, it's fun modding a car regardless of power increase increments...
I enjoyed tinkering with my car even tho I spent thousands of dollars for only 1hp
Remember those awesome super Duper custom heads you got for $3500?? Massive gainz
Old 05-22-2022, 10:20 PM
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So Acura TL nation current owner of 2004 3.2 tl automatic

Originally Posted by Glorygang600
I already have hfpc's and J Pipe installed on my 5AT TL would it be worth it to install a 3.5 intake manifold? I read that it should be plug and play compared to the 3.7 im and tb mod I figured if I can get a 3.5 manifold at the junkyard it'd be worth the squeeze?

My engine blew (I’m in Canada so we do r got the variety as the USA “ but I was told about the j35”s for a just a slight more bang under the hood. I have a typhoon short ram airintake j35manifiod with spacer. So my ? Question is. It’s the j35manifiod compatible with a j32 motor
Old 05-22-2022, 10:38 PM
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Originally Posted by alexander212
My engine blew (I’m in Canada so we do r got the variety as the USA “ but I was told about the j35”s for a just a slight more bang under the hood. I have a typhoon short ram airintake j35manifiod with spacer. So my ? Question is. It’s the j35manifiod compatible with a j32 motor
Yes, and yes.

Manhatten huh.
Old 05-22-2022, 11:11 PM
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You must type 200 words a minute aswell to make that many typing "Mistakes".
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