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 A few questions about Honda Challenge H2 (Clutch, Flywheel, etc.) [Archived]
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MrDomino




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241 posts [100%]
Erie PA
3-7-2007
  A few questions about Honda Challenge H2 (Clutch, Flywheel, etc.)« » 12:47 PM 5/14/2008 Reply  Edit

This summer I'm going to start doing HPDE's with the hopes of getting a competition license (this is at least a few years away still). I currently autocross. Anyways, my engine is starting to burn oil and we pretty much narrowed it down to the piston rings. I'm going to try and get the engine rebuilt this summer (GSR w/ B18C1).

Do you recommend building the car to H2 or H3? I didn't see too much of a difference between H2 and H3 with the exception of aero and a few more engine allowances for H2.

Does anyone know any good shops/engine builders in the OH (Columbus, Cleveland) area or the Pittsburgh area that would be willing to do the rebuild? I'd like to get someone that is experienced with Honda engines instead of just a local mechanic.

Also, the clutch on the car is original (with 130,000 miles) so I'm going to get that replaced also. What do you guys recommend for a clutch and flywheel (might as well get that done too)? The car is going to be street-driven for about another year but I'm not concerned with "drivability."

Thanks for your help.


1997 Acura Integra GS-R
=>2007 MBR SCCA 2nd Place STS
=>Plans for 2008: Engine Rebuild, NASA HPDE's



577HondaPrelude




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2270 posts [100%]
Morgantown wv
9-17-2002
 « Re: A few questions about Honda Challenge H2 (MrDomino)« » 1:06 PM 5/14/2008 Reply  Edit

H3 is just about a dead class. Build for H2, there are many new H2 cars showing up at the track this year. As for the clutch, I have had good luck with exedy high performance street OEM replacement clutch. No real need for a super stiff race clutch. For the flywheel just about any good light weight unit should be ok.




NASA Road Racing.
Visit McKinney RaceWorks for info about my race car.
Visit MFactory Competition Products for info on my sponsor!!

ekim952522000




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1517 posts [98%]
Northern CA
6-20-2005
 « Re: A few questions about Honda Challenge H2 (577HondaPrelude)« » 2:11 PM 5/14/2008 Reply  Edit

Quote, originally posted by 577HondaPrelude »
H3 is just about a dead class. Build for H2, there are many new H2 cars showing up at the track this year. As for the clutch, I have had good luck with exedy high performance street OEM replacement clutch. No real need for a super stiff race clutch. For the flywheel just about any good light weight unit should be ok.

What he said and build for H2.


NorCal H2 Civic #43
http://www.WestCoastHC.com

MrDomino




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241 posts [100%]
Erie PA
3-7-2007
 « Re: A few questions about Honda Challenge H2 (ekim952522000)« » 2:33 PM 5/14/2008 Reply  Edit

Ok, what all should I get done when rebuilding the engine other than port matching? Does a "Blox Style Intake Manifold" really do much?


1997 Acura Integra GS-R
=>2007 MBR SCCA 2nd Place STS
=>Plans for 2008: Engine Rebuild, NASA HPDE's

davidnyc




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2960 posts [101%]
Murphy Tx
8-21-2000
 « Re: A few questions about Honda Challenge H2 (MrDomino)« » 3:13 PM 5/14/2008 Reply  Edit

Is your car a hybrid?

If not, then I would look at the SCCA and NASA rule books and try to build for both. SCCA now recognizes NASA licenses so swithcing back and forth between the race groups is much easier now. If you have a DC2 GSR, then I believe it would fall into ITS or EP (EP being the much more modified class than ITS).


David B.
Proverbs 19:21 Many are the plans in a man's heart, but it is the LORD's purpose that prevails.
R-speed
2000 ITR-0324 NASA H2/H3

kommon_sense




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2507 posts [100%]
Durham NC
1-2-2003
 « Re: A few questions about Honda Challenge H2 (MrDomino)« » 4:19 PM 5/14/2008 Reply  Edit

I'd recommend the exedy organic racing clutch. Probably a little more bite than you need, but still a full face organic clutch disk, so its still very friendly. Great clutch without being excessive.

For the flywheel, maybe take a look at the ACT Streetlight flywheel.


'98 Civic EX Coupe
SOHC Upgrades | D-Series Porting | Sea Foam Thread

577HondaPrelude




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2270 posts [100%]
Morgantown wv
9-17-2002
 « Re: A few questions about Honda Challenge H2 (davidnyc)« » 4:28 PM 5/14/2008 Reply  Edit

A good H2 engine build:

-Head-
cleanded and balanced OEM injectors (RC engineering does this)
Decked head for max legal CR for your engine.
Port matched intake and exhaust ports (no more than 1" into the head)
Performance valve job (normaly 5-angle cuts in the valve seat, and each valve seat cut to resault in equal combustion chamber volume for all 4 chambers)
Stiff Aftermarket valve springs so you can rev the crap out of it
Good valve guids/seals/retainers
ARP head studs
removed EGR sytem.
Cam Gears

-Block-
If block is in good shape:
New main bearings
New piston rings


Modified by 577HondaPrelude at 5:22 PM 5/14/2008


NASA Road Racing.
Visit McKinney RaceWorks for info about my race car.
Visit MFactory Competition Products for info on my sponsor!!

prkiller




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4208 posts [100%]
Between Willow, and Button Willow CA
8-20-2001
 « Re: A few questions about Honda Challenge H2 (577HondaPrelude)« » 4:43 PM 5/14/2008 Reply  Edit

H2 is the class you want to build for.

Gotta go with one of my sponsors for the clutch!
ACT modified street disc or the puck clutch if your more aggressive during shifting.
ACT prolite flywheel!



HC CRX H4

Sponsors!
Koni : Alaniz ASR : GearX/Special Projects MS : SPC : ACT : Sparco

MrDomino




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241 posts [100%]
Erie PA
3-7-2007
 « Re: A few questions about Honda Challenge H2 (prkiller)« » 7:28 PM 5/14/2008 Reply  Edit

Quote, originally posted by prkiller »
H2 is the class you want to build for.

Gotta go with one of my sponsors for the clutch!
ACT modified street disc or the puck clutch if your more aggressive during shifting.
ACT prolite flywheel!

which clutch is it on the ACT site? I'm staring at about 20 different clutches, which one is the puck clutch you were talking about?

Quote, originally posted by 577HondaPrelude »
A good H2 engine build:

Stiff Aftermarket valve springs so you can rev the crap out of it

Modified by 577HondaPrelude at 5:22 PM 5/14/2008

Anyone have any race-proven recommendations?


1997 Acura Integra GS-R
=>2007 MBR SCCA 2nd Place STS
=>Plans for 2008: Engine Rebuild, NASA HPDE's

prkiller




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4208 posts [100%]
Between Willow, and Button Willow CA
8-20-2001
 « Re: A few questions about Honda Challenge H2 (MrDomino)« » 10:17 PM 5/14/2008 Reply  Edit

The puck style is either a 4 or 6 puck! Either will work for your application!
Go with the "heavy duty" pressure plate!




HC CRX H4

Sponsors!
Koni : Alaniz ASR : GearX/Special Projects MS : SPC : ACT : Sparco

GI8U2racing




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410 posts [100%]
Bowie, MD / Bangalore, India
9-10-2006
 « Re: A few questions about Honda Challenge H2 (prkiller)« » 1:16 AM 5/15/2008 Reply  Edit

H2 is where it's at baby (other than H1 of course for you crazy bastards )


Jonathan Baker

1988 CRX HF w/B18C5 - HPDE (soon H2) car
Check my profile for the setup

FlyZlow




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1038 posts [100%]
Tucson AZ
1-22-2004
 « Re: A few questions about Honda Challenge H2 (577HondaPrelude)« » 12:36 PM 5/15/2008 Reply  Edit

Quote, originally posted by 577HondaPrelude »
A good H2 engine build:

-Head-
cleanded and balanced OEM injectors (RC engineering does this)
Decked head for max legal CR for your engine.
Port matched intake and exhaust ports (no more than 1" into the head)
Performance valve job (normaly 5-angle cuts in the valve seat, and each valve seat cut to resault in equal combustion chamber volume for all 4 chambers)
Stiff Aftermarket valve springs so you can rev the crap out of it
Good valve guids/seals/retainers
ARP head studs
removed EGR sytem.
Cam Gears

-Block-
If block is in good shape:
New main bearings
New piston rings

Modified by 577HondaPrelude at 5:22 PM 5/14/2008

You forgot new rod bolts and rod bearings. There's no way I'd reuse either of those.

I've run an Exedy organic "stage 1" clutch and Fidanza flywheel in my car for 3 seasons now. I just had them out of the car before the last event and they both looked great, so I'd recommend those. ACT makes good stuff as well.

As for building the engine, if you plan on racing, this would be a really good opportunity to get very familiar with the inner workings of your car. I'd definitely recommend doing it yourself. You'll need to have a machine shop do some of the work (like pressing in the new rod bearings and reboring the rods, honing the cyl walls, etc), but I'd recommend doing the assembly yourself. The more you can learn about your car, the better off you'll be once you start racing it IMHO.


Scott Brewer
NASA AZ HC Regional Director

http://www.clubracingaz.com
http://www.hondachallenge.com

#02 H2 '90 Integra - now with 100% more B20!

BrianZ




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873 posts [98%]
Pleasanton Ca
3-26-2003
 « Re: A few questions about Honda Challenge H2 (MrDomino)« » 2:25 PM 5/15/2008 Reply  Edit

I only have been running H4 but I use a ACT flywheel and STOCK pressure plate and disk... 4 years old and holding strong!


Norcal HC Director

1995 Integra Lss
Honda Challenge H4 #33

Thanks to my Sponsors:
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Stinkycheezmonky
Instructwhore



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8177 posts [101%]
Burninating the peasants
11-5-2002
 « Re: A few questions about Honda Challenge H2 (BrianZ)« » 7:51 AM 5/16/2008 Reply  Edit

I've had great success with Clutchmaster clutches, and have used the Stage 3 in my past 3 cars. Excellent feel, very reasonable pedal pressure, and great grab. OEM works, but has poopy engagement (IMO), and ACT HD has a pretty stiff pedal pressure. Fidanza flywheels likewise have worked well for me, and have a removable friction surface (meaning no machining down the line). There are a number of nice flywheels though, and other than for servicing I don't think you'd notice too much of a difference between them.


Paradise on my left, Hell on my right, and the Angel of Death behind.

Shifter Kart Mafia Member 005

MrDomino




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241 posts [100%]
Erie PA
3-7-2007
 « Re: A few questions about Honda Challenge H2 (FlyZlow)« » 7:43 PM 5/21/2008 Reply  Edit

Quote, originally posted by FlyZlow »

As for building the engine, if you plan on racing, this would be a really good opportunity to get very familiar with the inner workings of your car. I'd definitely recommend doing it yourself. You'll need to have a machine shop do some of the work (like pressing in the new rod bearings and reboring the rods, honing the cyl walls, etc), but I'd recommend doing the assembly yourself. The more you can learn about your car, the better off you'll be once you start racing it IMHO.

I agree completely. However, I'm in this crappy situation where in daily driving the car I'm eventually going to race. Hopefully I'll have a new daily driver next fall but, until then, I'm stuck. The car really needs new piston rings and is going to need a new clutch pretty quickly so I figured that I could just have those both replaced and get some head-work done while I'm at it. I'm probably going to hold off on the port matching because I'm going to eventually go to a Hytech header and probably a new Intake Manifold since it is allowed for H2. I'm also living between apartments and the few weeks at home (which has a small garage with not many tools) so I don't have the space to tear the engine apart.

Someday I'll have my dream garage complete with a ton of space..... someday.


1997 Acura Integra GS-R
=>2007 MBR SCCA 2nd Place STS
=>Plans for 2008: Engine Rebuild, NASA HPDE's
   

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