November Fastrack

[mossaidis]

The USDM only received the F20A# in SOHC configuration. Those motors have terribly small ports and crappy intake manifolds and would suck for STL. If you are talking about a F-series motor for STU then skip over the the sister series and get an H22. A K24 weights significantly less than the H22 though so it would be the naturally better choice (more power in the K24 as well).

NOTE: ALL USDM motors have a 5 digit code stamped on the block, So A##A#, ie B16A2, K20A3, F22C1. A lot of JDM/EDM only have a four digit code A##A with no B16A, B16B, B18C, K20A, F20B.

Thank you for clarifying sir! I trying to find a USDM non-F20C1 motor to swap into a Honda S2000 under STL. I (we) don't think there is a viable USDM F series motor option, and certainly not a H series option since displacement is over 2.0 liters. And unless they decide to change the STL rules allowing for JDM motor, k20a2 will be your best choice S2000 in STL if someone goes that route.

PS. and adding a K20a2 still (*we think*) gives you the challenge of getting (given the current rules) a stock k20a2 TB/IM set up that would work in S2000.

 

[Chip42]

you will have trouble with intakes - there's just nothing "factory" that will work.

the S2000 F-series engines are very much not like the other F-stuff we got in the states.

what about a B18? again - issues with intakes would need rulings, but the weight would be preferable to a K20 and output, as has been rehashed a number fo times by tGA now, would be on par with a K20 - assuming the K even remains STL legal.

 

[mossaidis]

Let me ask one more question since I know very little about the S2000 - would a B18 or K20 mount up to a S2000 tranny w/o mods?

 

[tnord]

if i were to do something dumb like build a car for these nonsense ST classes, i'd be very tempted to look into a dumping renesis into a 2002+ sport package miata.

 

[almskidd]

Let me ask one more question since I know very little about the S2000 - would a B18 or K20 mount up to a S2000 tranny w/o mods?

First problem the B,D,F and H series motors spin anti-clockwise while the rest of the worlds motors spin clockwise, including the K-series motor. I am not sure what direction the F20/22C spins. It is different enough from the rest of the F-Series and similar enough to the K-series that I think it is possible that it spins clockwise.

Second problem the bell housings are significatly different. I have seen a F20C mated to a K-series transmission in a front wheel drive configuration.

http://www.k20a.org/forum/showthread.php?t=34892

Now that I am taking a closer look at that posting it seems as though the F20/22C from the S2000 spins clockwise. Which means the K20A2 in an S2000 with an adapter plate is possible.

Travis: Only the 12A is permitted in STL (2600lbs)

 

[lateapex911]

yea, it's clear whover wrote the rules hates rotaries and wants them NOT in STL, LOL

 

[quadzjr]

yea, it's clear whover wrote the rules hates rotaries and wants them NOT in STL, LOL

Yeah I thought that to.. your 12A powered Mazda has to weigh heavier than a honda b-series powered chassis.. good luck with that

 

[StephenB]

if i were to do something dumb like build a car for these nonsense ST classes, i'd be very tempted to look into a dumping renesis into a 2002+ sport package miata.

I am a newbie as far as rotarys go but I thought the renesis was only the 13b. If so that is in STU not STL. At least that is what I heard anyway.

Stephen

 

[Dano77]

OH BOY I get the wieght REWARD of 320# for haveing a car I cant touch or modify in either STL or ITA. Way to breath life into an older chassis. I dont think my cage will be legal after we add the wieght due to wall thickness. {new can of worms there,huh} At least in STU we can run a prod spec engine and modify the brakes to obtain the bonus of a real bolt pattern. ... But in STL I can run the Renisis motor and Fuel Injection HMMMM

 

[quadzjr]

Isn't the renesis based off the 13B? I thought only the 12A was allowed in STL. That would make no sense. all rotaries should be allowed in STL. with different weights.

 

[Andy Bettencourt]

<----thinks he would build a peripheral port 13B at 2600lbs in STL...

 

[Marcus Miller]

<----thinks he would build a peripheral port 13B at 2600lbs in STL...

Can you do that in a miata?

 

[Andy Bettencourt]

Can you do that in a miata?

You bet. Not sure the mods you need to do to the car would keep it legal (subframe). I think about 200whp is possible with the factory intake, MAF and TB.

 

[lateapex911]

They're not allowing any mods in STL to rotaries, are they?

A Renesis in a Miata would be cool chit, mon!
(Even stock)

 

[CivicRacer05]

I noticed they split the 92-95 Honda Civic EX Coupe and Si Hatch into separate lines. Now they've dropped the minimum weight of the Si to match the Del Sol Si at 2270# based on the fact that they share the same engine. I've already sent an inquiry to the CRB asking why the EX Coupe didn't get the same reduction (same engine there, too.)

I'm sure a ruling will come out in the next Fastrack, but I was wondering if anyone here had any insight or thoughts/opinions on this. Truth be told, I seem to be stuck at 2350# w/ driver, on my EX Coupe, and am not sure where I can lose 45#, much less 80# if they approve the modification.

Darren
#05 ITA Honda Civic EX Coupe
2005 Cal Club ITA Champion

 

[mossaidis]

^^ I mentioned the exact same point on this thread/forum, I agree. I *believe* Josh took note of the EX coupe weight discrepancy and has discussed it with the ITAC at their last meeting (or the one before).

 

[JoshS]

^^ I mentioned the exact same point on this thread/forum, I agree. I *believe* Josh took note of the EX coupe weight discrepancy and has discussed it with the ITAC at their last meeting (or the one before).

Correct, we discussed it and the resolution should be in the next Fastrack.

 

[Z3_GoCar]

I noticed they split the 92-95 Honda Civic EX Coupe and Si Hatch into separate lines. Now they've dropped the minimum weight of the Si to match the Del Sol Si at 2270# based on the fact that they share the same engine. I've already sent an inquiry to the CRB asking why the EX Coupe didn't get the same reduction (same engine there, too.)

I'm sure a ruling will come out in the next Fastrack, but I was wondering if anyone here had any insight or thoughts/opinions on this. Truth be told, I seem to be stuck at 2350# w/ driver, on my EX Coupe, and am not sure where I can lose 45#, much less 80# if they approve the modification.

Darren
#05 ITA Honda Civic EX Coupe
2005 Cal Club ITA Champion

Hey Darren,

Off topic, but congratulations on winning the low-buck racer of the year award

 

[CivicRacer05]

Hey Darren,

Off topic, but congratulations on winning the low-buck racer of the year award

Thank you, James. I guess only making it to 3 events, yet still coming 4th in points actually counted for something!

 

[downingracing]

I noticed they split the 92-95 Honda Civic EX Coupe and Si Hatch into separate lines. Now they've dropped the minimum weight of the Si to match the Del Sol Si at 2270# based on the fact that they share the same engine. I've already sent an inquiry to the CRB asking why the EX Coupe didn't get the same reduction (same engine there, too.)

I'm sure a ruling will come out in the next Fastrack, but I was wondering if anyone here had any insight or thoughts/opinions on this. Truth be told, I seem to be stuck at 2350# w/ driver, on my EX Coupe, and am not sure where I can lose 45#, much less 80# if they approve the modification.

Darren
#05 ITA Honda Civic EX Coupe
2005 Cal Club ITA Champion

I've sent the same request for the EX Coupe and expect the information in the next publication. We've got one of our Civics to 2310 with driver and can get another 30-40 lbs without issue. Working on getting the other EX Coupe to the same weight this winter.