outersquare

a vendor power rev racing on k20a.org is selling them.

the main problem with the hondata gasket is that ~200F coolant still runs past it into the injector base. After idling, the manifold still gets to 140F even with the hondata gasket.

The plenum/manifold has no such coolant passages so isolating it will help.

JTso

iTrader: (2)

btw, that's where I got my gasket.

xizor

i'm a bit confused by the vendor's thread on k20a. are all k-series IM/injector base gaskets the same, unlike the block/IM gasket which differs w/ a coolant port on k20'as and k24a2, other k24's? this pic is what it should be like?

JTso

iTrader: (2)

I was a bit confused at first, as they referenced all K24 gasket being the same. But the gasket in the pic seems to match our intake manifold.

vidgamer

Interesting. Is it easier to install? (Like, might this be a good alternative to installing the Hondata one?)

outersquare

the injector base/intake manifold gasket are the same between the K24A4 and the K24A2, I have both manifolds and have overlayed them, they are the same size/shape.

outersquare

it should be much easier to install, you don't need to drain coolant to install this one.

xizor

well if you're going to all the work to get the IM off, w/ that PITA bolt on the bottom, getting the injector base is just a couple more bolts. draining the radiator isn't the hardest thing, just time it when you need a flush anyways

outersquare

the coolant is good until 100K miles or whatever insane mileage, it doesn't need to be touched for a long time.

I don't care to reuse the coolant once it's been drained, you might as well repace it while it's out, and it costs a lot. Plus the hondata gasket costs more than the powerrev one.

finally, you have to bleed the cooling system afterward.

xizor

if a moderator wouldn't mind moving these posts to a new thread?

well, you could buy both gaskets, they're not necessarily alternatives to each other.

and what bleeding are you talking about? i read through the manual and it doesn't mention any formal bleeding system (i certainly didn't do it when i drained my rad. doh!)

JTso

iTrader: (2)

A new intake manifold gasket is now available. This is different than the Hondata heatshield gasket that goes between the injector base and the head. This new IM gasket goes between the IM and injector base.

JTso

iTrader: (2)

Oh well, I splitted the thread into this one but somehow lost my original first post.

JTso

iTrader: (2)

A new intake manifold gasket is now available. This is different than the Hondata heatshield gasket that goes between the injector base and the head. This new IM gasket goes between the IM and injector base.

shaang

I'm installing mine saturday.. then i'll redyno and give you guys some new numbers to drool at! Since my last dyno I've added hondata heatshield, UR pulleys, 06' IM and 06' TB.

outersquare

lol, at first i was like i don't remember writing this post.

i guess while i'm here, this is a description i wrote for the accord/k24a4, which is basically the same manifold setup;


product link

The vendor tells me they are currently out of stock but will get more soon. If PM the vendor, he sells it for a discounted price, i think $32 shipped.

The idea is the same as the hondata intake manifold gasket. However, the hondata part sits behind the 2nd piece "injector base", which to install requires that the coolant be drained.

This gasket sits just after the "intake manifold"/plenum, and does not require the coolant to be drained for install. It is also cheaper than the hondata part by about $20.

This part has the added benefit that the hondata gasket still has coolant running past it, thus still heating up the manifold somewhat. Since the powerrev gasket sits before the "injector base", there is no coolant running past it and it should in theory stay cooler.


As always, I suggest a $15 haynes manual from pepboys to help with install.



"injector base"




"intake manifold"

the hondata gasket replaces #11 in the first diagram.

the powerrev gasket replaces #3 in the second diagram.

jjkim325

hm... so correct me if I'm wrong... I could get both hondata and powerrev gaskets and see compounded benefits?

<---- Major noob....

xizor

JTso

iTrader: (2)

It would be even more affective with the throttle body coolant bypass to cut off the heat source.

curls

Any idea how much gain in HP the Powerrev gasket alone would net? What about with the TB coolant bypass as well?

I don't have the Hondata one nor do I plan on it... just wondering what this new gasket alone would do.

JTso

iTrader: (2)

I don't think anyone has any results after the coolant bypass or the Hondata gasket alone, nor will the Powerrev IM gasket. It's just too costly to perform such tests. It's probably more practicle to do a before/after surface temperature comparison with a thermometer. However, I did dyno 3whp from the Hondata gasket and coolant bypass together.

Keep in mind the underhood temp will eventually heat soak all the components, but the gaskets will slow down the heat transfer from the cylinder head.

jjkim325

Hm.... I dont really have the resources to test anything but for $30 bux I guess it doesnt hurt to just get a powerrev gasket while I'm getting a hondata gasket....

hondata

Not correct. There is a water coolant passage running past the right of # 4 cylinder to a pipe underneath.

Under runners 3 and 4 there is an unused EGR passage which might be mistaken for a coolant tube. The EGR passage is a hangover from the manifold's use on the K24 Accord.

peter_bigblock

Is that the right-most "hole" in the stock and Hondata img's, looking at them as they'd sit in the engine? I noticed that the Comptech img did not have that hole, I'm assuming no coolant flows through that passage on the TSX. Is that right?

TSX2345

I installed mine not too long ago. Took it for a short lil drive. The manifold is definately cooler to touch. I do have the Hondata as well.

JTso

iTrader: (2)

I just installed mine a few minutes ago as well and took some before temp readings. I'll compare the temp later.

TSX2345

Johnny please post the temp readings. I am definately interested

outersquare

lol same, but i already took measurements.

before the 2nd gasket the plenum still got as high as 130F.

after the 2nd gasket it doesn't break 120F.

this is via an IR thermometer.

outersquare

also anyone who got theirs but hasn't installed yet, anyone mind overlaying the p2r gasket over the original?

I usually atleast try to make sure the port sizes are the same, no reason to believe they aren't, but nice to confirm.

JTso

iTrader: (2)

My results are very similar that the post numbers are around 7 degrees cooler. The intake runner closest to the throttle body being another 2 degrees cooler. This includes a few heat cycles with the fan on and engine idling. I also used an IR thermometer.

JTso

iTrader: (2)

I did that before the installation and they are the same.

outersquare

great thanks, i forgot to myself

xizor

installed my powerrev gasket today, very easy to do. is the fact that the manifold bolts have much less thread now a problem? I don't expect the manifold to fly off, but the nuts only go about halfway on.

here's a couple pics of the gaskets lined up, they are identical matches

JTso

iTrader: (2)

Yeah, it will be fine. The two top studs are a little short for the mounting nuts, but the rest of the bolts are long enough to seal the manifold.

outersquare

so far no probs with mine, still love how easy it was to install

TSX 3Pedal

Which intake manifold gasket is better, the Comptech or the Hondata?

The reason I ask is because there is an extra hole on the left side in the Hondata IM Gasket...do we need that extra hole?

Hondata IM Gasket:


Comptech IM Gasket:

Black Ninja

I can't see the pics on the first page

TSX 3Pedal

BUMP! Which is better?

TSX 3Pedal

BUMP...

Comptech or Hondata?

TSX2345

I'd go with Hondata.

Can't go wrong with that choice since they been in the game longer then Comptech when it comes to these