What does Hondata IM Gasket do? - Honda Prelude Forum

bolivianfuego · 02-16-2003, 12:54 PM

How much gains and wat does it do?

sharkcohen · 02-16-2003, 01:09 PM

It insulates the intake manifold from the head, reducing intake air temperatures. I'm not sure how much of a gain alone it would give, but I do know that it does what it claims to do. I use it on my setup because of the high intake air temps I see with my JRSC. I'd say it has been good for about 20 degrees F drop on my IATs.

bolivianfuego · 02-16-2003, 01:13 PM

Interesting, how hard is the installation on this. From 1-10 how hard is it to install?

sharkcohen · 02-16-2003, 01:21 PM

I can't rate it, because that would be relative. I found it to be easy, but others have found it to be very difficult. It requires removing the entire intake manifold and all related accessories, which is no small job. Then the stock paper intake gasket needs to be removed, which can take several hours of scraping and at least one can of gasket remover because you will find the gasket stuck to the head. There are past threads on peoples experiences doing this, I suggest you do a search and read what they have to say.

bolivianfuego · 02-16-2003, 01:47 PM

SO it lowers the temp. , thus wat are the gains on this?

sharkcohen · 02-16-2003, 02:11 PM

Not much at all if you don't take advantage of the lower temps with other mods and some sort of electronic engine management (vafc, hondata, AEM EMS, ect).

sharkcohen · 02-16-2003, 02:14 PM

Have you checked out what the hondata site says?

http://www.hondata.com/heatshield.html

Satan_SRV · 02-16-2003, 02:21 PM

Geez man do some research. The best place to start is from the manufacturer as listed above by hondata.

It's not that a Hondata IM gasket will "gain" you anything, what it does is keep you from 'losing'

As you car runs longer, the IM will get hot from heat transfer from the head, intake temps go up, and your car can't produce nearly enough power.

The longer your car runs, the worse performance will get. You can see this on a dyno, in successive dyno runs like mine:

These are back to back runs, with no wait in between runs. You can see across the board performance is down 2-3hp and 2-3 lb.ft of torque.

Now think about extended hard driving/track/auto-x conditions. Sure you are moving so air runs through the rad, but the engine gets hot as hell.

The Hondata gasket insulates the IM so that your performance doesn't drop off so badly. Worth every penny on an N/A or FI engine, especially in the summer when you need it most.

Blitzbaster02 · 02-17-2003, 01:12 AM

Worth every penny of the 69 bucks you will spend.

showoff · 02-17-2003, 08:11 AM

Dont you have to do something so a cel wont trip?

Satan_SRV · 02-17-2003, 08:43 AM

Quote:

Originally posted by showoff
Dont you have to do something so a cel wont trip?

Well you don't block the EGR....you just make a hole in the gasket. However if you're running a p72 there is no EGR so block away....or any standalone you can block it.

showoff · 02-17-2003, 11:42 AM

So do not block the egr and everything else is just installing the gasket?

marcucci · 02-17-2003, 11:46 AM

If you don't have to pass any OBD2 emissions testing you can leave the EGR blocked and do the OBD2 "workaround" (reset mod) to avoid the CEL. You can't run the workaround for OBD2 emissions testing, though, and the CEL would fail you for emissions.

Go to http://www.s2000.org and hit the mods section and look at the installation and writeup for the s2k. The Prelude one is involved, it took me 4 hours to do it on a 98SH. Should be a little quicker on the base since you have more room to work.

Dragazn · 02-17-2003, 11:55 AM

marcucci, like we are in TX and we ned to do the emission then we ne to make a hole for the EGR right to pass emmision, right

Blitzbaster02 · 02-17-2003, 08:25 PM

lol, texas has emissions tests????

showoff · 02-17-2003, 09:42 PM

hahaaa yup only in some countys

marcucci · 02-18-2003, 06:55 AM

In all the large counties that house the metroplexes: Harris (Houston), Bexar (San Antonio), Dallas, Tarrant (FW), Collin (Plano)... more (like Denton) are coming in the next year or two, too.

Yes, to pass OBD2 emissions testing you MUST open that hole. You cannot pass with a CEL or with the ECU reporting a "not ready code" (which you get if you have the OBD2 workaround). So that hole needs to be open.

JC_lude · 02-24-2003, 02:00 PM

hi guy , how come hondata im gasket is so thick and would that making the the problem ?

marcucci · 02-24-2003, 02:07 PM

What problem? The EGR? No, it's a problem because the insulator intentionally blocks it. It must be drilled for the EGR to work properly.

The insulator reduces manifold heating by the head through a good insulator and a lot of it (i.e. thick).