Basically is it legal to run a LSvtec in H2? They dont seem to clasify B20 vtec or LSvtec anywhere. They have B18 A/B and B18C and C5 classified. I dont see a LSV being more powerful then a JDM C5.
Cam someone help me out here.

Thanks

 

No, it isn't legal. Read the H1 rules, LS/B20-VTEC is covered there.

See Section 9 here: http://www.nasaproracing.com/rules/Honda-Challenge.pdf

 

Thanks, So looks like I need to find a GSR/TypeR block.

 

There are actually quite a few blocks that are legal in H2. If you want a B series VTEC engine, then you need a GSR/Type-R/Civic Si block. I personally run a B18B at 2200lbs, whereas others run the B18C5 at 2500lbs, or the B16A at 2250, or the H22, B18C1, K20A3...there are a lot of engines that are available for you to run, just take a look at the section 5.1, then look at the H2 specific section.

Please ask if you have any other questions.

Austin

 

I read that in the rules. I was thinking od building a Honda challenge car from my 97 hatch. It already has a LSV. I dont have the money to make a competitive H1 car seeing as how that is a unlimited Hybrid Class. I would think there are big money tuner cars in that class.
Also the rules I got from the HC website does not specify any mods to a B18C1 motor. But a B16 can run typeR cams and a B18C5 has to be 100% OEM. Does the B18C1 have to be OEM also?
It says that the motors must be built with OEM parts. So can I take a GSR block and Bore to 81.5 (82 is max in rules) and install OEM TypeR cams, and run the motor at 11.6:1 comp ratio? (max in rules I got)

Sorry but it seems that the rules kinda go back and forth with ammendments and certain mods allowed and some are not.

 

For H2 the GSR and Type R blocks have to be 100% OEM. No cam swapping or piston swapping. You can run a JDM B18C with ITR, GSR, or JDM ITR pistons, because the block itself doesn't denote one particular model. Cams, same deal. You can bore to 81.5mm, but have to use OEM or OEM equivalent pistons (no lightweight stuff). The idea behind that ruleset (called the "Limited Prep" rules) is that you should be able to basically get a stock junkyard motor, throw it in, and be legal. There are minor exceptions (throttle body, intake manifold), but they are explicitly stated in the rules. The idea of "if it doesn't say you CAN, then you CAN'T" applies. It does not say you CAN put a Type R head on a GSR block, so you CAN'T, as an example.

Section 10 covers the H2 LPV stuff.

 

The first line of the rules explains it. "If these rules do not expressly state a modification is allowed, it is prohibited."
BTW - in H2 the B18c1 is allowed to use a TypeR or blox intake manifold

per the HC rules : 10.3 a) The entire engine assembly, (cylinder head and block) MUST be constructed entirely of Honda/Acura OEM parts. Cylinder head and internal engine parts must be OEM parts for that particular engine code. Updating and backdating of parts for that engine code is permitted. No aftermarket parts are permitted in, the “bottom end,” of a Limited Prep Vehicle engine (except were specifically stated). Example(s): 1) A USDM D16A6 may not use pistons from a D16ZC engine and a head from a D16Y8. 2) A USDM B18C1 may not use ITR crank and pistons with ITR head and call it a B18C5. 3) A JDM B18C (GSR) may use ITR crank, pistons and ITR head and call it a JDM ITR engine since that is the proper engine code for both engines.

If you read the class rules first, then the amendments for particular engine it make more sense. I hope this helps.

 

Type R/B16 is different head bolt pattern than the GSR IM, won't fit. Spencer is going through that IIRC. Any motor is good in H2, top 3 finishers at the last ECHC race all had different engine types

 

If we are talking about HC rules, I have a question. Fuel? I can't find anywhere in the rules about what type of fuel. 100oct max? 116oct max? Fuel unlimited?

 

Thanks For all the good info. After reading the rules about 4 more times I understand now. I am also wonderinf about fuel.... What is max Octane I can run in H2?

 

The highest that I see people using is 100, or 104, I don't think that you'd need to run anything higher. I'm running 91, and in truth my B18B1 would most likely make more power with the 87/89 stuff.

Off to sleep I go, must get up early for Sears Point this weekend.

 

Page 78 of the CCR:
18.5 Permitted Fuel
Permitted fuel is any grade of commercially available unmodified gasoline, E85 Ethanol,
biodiesel, or diesel. The driver must notify the Race Director if using methanol or other
exotic fuel, when class rules permit. Vehicles that run on (all or in part) electricity,
propane, or hydrogen must be cleared through the National Office in writing.

 

thanks stinky!