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H2 limited prep rules


dropkick317

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I'm new to this HC thing so forgive me if my questions seem stupid.

 

First of all if I use a composite hood do I have to retain the hinges, or can I pin the hood on completely? Also, I understand that if I run a d-series engine I have to run a d-series trans but, can I swap out gears from other d-series boxes to make some kind of super d-series box?

 

I really like these new rules and I'm considering make the switch to H2 with my 93 Civic (built for ITA now) but, I see no possible way to get my car down to 2000lbs w/driver.

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Your ITA car would slot right into H4 as-is. Are you just looking to make it faster? Personally, I think only the EF's/CRX's can be competitive with the D-series motors in H2. If you really want to go H2 with your civic, you should probably look at the DOHC motors. The mount kits aren't that expensive and are readily available. Personally, I'd probably go with a non-vtec B18.

 

To answer your question on the tranny, that would not be allowed in H2. Actually, none of the Honda classes allow modification to the gear ratios other than the final drive.

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If you really want to go H2 with your civic, you should probably look at the DOHC motors. The mount kits aren't that expensive and are readily available. Personally, I'd probably go with a non-vtec B18.

I agree. However:

B18a/b minimum weight is 2200lbs with driver

B20b/z minimum weight is 2250lbs with driver

 

neither minimum is easy to reach unless you're Danica Patrick, so I'd say get the one with the most power and torque: the B20

 

Here's mine:http://roadracegeek.blogspot.com/2007/03/my-mostly-stock-b20-h2-mill.html

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Before this turns into a "you should run this or you should run that" let me explain why I'm going with the d-series. I'm an engine builder and I just happen to have one of these on a stand half built. I also have three stockers sitting on the floor and one in the car. I do not have any B-series engines laying around. This whole idea of running H2 came to me over the weekend when I decided to try something other then ITA while I wait for my car to get approved for Fprod. I don't really think I will be that competative with this build but, it sure will be fun trying.

Don't get me wrong I'm not trying to be a jerk but, all I really want to know is can I pin my carbon hood on or do I have to use the hinges.

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Yes you can use any aftermarket hood in H2.

Yes you can use hood pins and remove the OEM latching system.

 

Other things you can do for weight that is not legal in ITA:

Hood

Light battery

Remove Heater core

Light wt. flywheel

any brake / rotor system can be used (might be lighter than OEM)

 

 

Also the rules say that any transmission can be used as long as it is the same series as the motor. Ie. If you using a D-series motor than any D series transmission can be used. So you can pick the one with the best gear ratios to use. However, I'm not sure that means you can mix and match any D-series gears into any D-series trans?? ....make a supper D-tranny that uses all Honda D-series parts, but was never offered in that configuration from Honda. Legal or not? I have no idea.

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I'm not sure that means you can mix and match any D-series gears into any D-series trans?? ....make a supper D-tranny that uses all Honda D-series parts, but was never offered in that configuration from Honda. Legal or not? I have no idea.

You cannot mix gears. A pity because between D-series and ZC gearbox innards it is possible to build a pretty trick unit. I like that rule (mostly because I think gearbox building is black magic and I want nothing to do with it) but it is fun to dream of the possibilities...

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Yes you can use any aftermarket hood in H2.

Yes you can use hood pins and remove the OEM latching system.

 

 

What about hood hinges? Do I have to use them?

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