THSCC Forums

changing the head from single cam/ carburated (4a-c) to dual cam/FI (4A-GE).. keeping the same block just updating a bit. Would that change the class of my car? You all are probably sick of these class change questions from me.

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beware of EV powered Ford EXP's they are quiet and come for you when you least expect it... hide behind an aluminum light pole...... ya that will help

'83 Corolla, right?

That changes you to E-Prepared, Street Modified or D-Modified.

Not really any other choices.

The only way to get a 4AG into a corolla, and remain stock, would be via a GTS or SR5 that came with a 4A. The SR5 would have to get *every* part the GTS got (including rear axle and disk brakes), the GTS gets to play for no extra cost.

There are the front drive cars too, but they don't count.

Scott

the engine is from a Corolla FX 16 4AG-E Same block as Mine just FI and Dual Cams. And the SCCA book says All Corollas are in H-stock. So it makes since to me that beings the engine will still be stock from the FX that I can still run in H-stock even though my corolla was origonally carburated.

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beware of EV powered Ford EXP's they are quiet and come for you when you least expect it... hide behind an aluminum light pole...... ya that will help

Dale, The rule in SCCA Stock is that a car/model "can" be converted to a different version from the same year BUT ONLY if essentially every part associated with the "new" version is used since for most cars the "desired" part is part of either a "package" or is associated with other mandatory options.

For example I would like to have the 2001 Mustang Bullitt stiffer and lower springs on my 2001 Mustang. However, to make the change and still run Stock I would also have to change to the Bullitt intake (not a trivial project), brakes, newer (due to mid-year change) heavier transmission, smaller rear sway bar, and maybe a bunch of interior and other trim stuff.

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Dick Rasmussen

FS 50 2018 Mustang GT

Dale, if you look back through the posts, you will find I had a similar dilema back a couple months ago. The sum, as has been mentioned, is that option package conversions in stock class must be COMPLETE, including EVERY item that has changed between the models. I was hoping to do a similar upgrade as you are, though mine would have also included a class bump to G-stock, since my engine would have been from a CRX Si. BUT, since I would have had to replace all trim, AND figure out how to retrofit a stock sunroof, I decided I would can the idea for now.

When all was said and done, I found the real solution - I bought a Miata and am looking forward to getting schooled in CS. Good luck!

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Dustin Fredrickson
-- I'm a nobody --

How exact does the swap have to be? For example, if the guage cluster is the same, except for were redline is shown, would that have to be changed? Stock stereo speaker system has one more speaker, would this need to be changed?

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2001 Honda S2000 - SOLD
2012 Boss 302
2003 BMW 330i

Stereo's are free in all classes as far as I know. I beleive there have been changes made in the rule book to state as much.

The swap would have to be exact with the exception of things that are legal to change by other allowances. For example you won't need to swap strut inserts but would have to swap strut housings (if they were different). Stereos are a bit confusing thanks to C&C but basically don't try to delete the stereo wiring (weight) in the process of an option conversion. I could imagine that this would get ugly if one version of a car included a 20-speaker stereo and another had a single in-dash speaker.

Remember that stock doesn't allow update/backdate either -- both the source and target vehicle must be the same model year.

Now if you want to run in SP instead of Stock this anality over option packages and model years is gone assuming your donor and recipient are on the same line in the SP car listings. However, you still won't be able to swap just the head. SP requires the block to come along from the donor.

--Kevin H.

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2003 WRX (again!)

Like Adam said.

If you perform a model conversion swap, everything must be changed _unless_ you can make a case for an item in "comfort and convenience". I believe some gauges (like a tach in a car that did not have one) have been deemed performance items and thus not covered in C&C. I also believe that something like an ammeter, or an oil pressure gauge, IS ok under C&C. The wrong tach like you're talking about is probably a grey area. If you were planning on winning something nationally, I would change it. Locally it is doubtful that a protest over something like this would be upheld.

I have always wondered about doing a model swap conversion into a tub with a paint color that was not available in the model that is being converted to. Is that OK? I'm sure it is, but it can cause a great amount of scrutiny! Ron's "ITA" Civic DX with an Si drivetrain is a good example of this. The color gives it away!

I haven't read the rulebook about stereo systems in stock in a while. Might want to check it out.

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Mike Whitney
whit32@gmail.com, 919-454-5445
V10, V8, V8t, I6, I6, V6, F4t, I4, I4, I4, I4, I2, 1, 1

You can add guages to your heart's content. Plus, you can add a shift light. That one blows me away. That is an option I am toying with. A shift light programmed to 400 RPM before redline would really help the MR2.

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Jim Pastorius
2008 Silverado VortecMax
1992 Camaro CMC#92
2002 BMW R1150R

2009 3rd Place CMC Mid-Atlantic Championship
2009 CMC Hyperfest Winner

You can change the radio/stereo system to your hearts content, even replacing the Bose multi speaker/amp system to lowly single speaker AM only (if you could find one) in a Miata under C&C, but you CANNOT delete the radio completely unless it was a deletable option from the factory, then you would need to use an OEM block off plate. This has been discussed elsewhere in reference to some of the STS Civics. I don't write the rules, just live or die by them.

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SPIN or WIN!
there's no glory for going slow.

well then, I'll just wait until the "off" season and do the swap as well as several other "upgrades" and hit FSP with a vengance Thanks fro all your input. and I am getting very sick of my carburator.

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beware of EV powered Ford EXP's they are quiet and come for you when you least expect it... hide behind an aluminum light pole...... ya that will help

Dale,
If you look at the FSP classifications you will see that the Corolla is listed on about 4 differrent lines and the FX 16 is on another line. The engine swap you want will probabaly land you in street mod. or D Mod.

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George Bright Member # 141
One of the youngest of the old farts.
Yes I voted against you joining the club.

still faster than HS (hopefully my driving skills work as well as I hope the car does

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beware of EV powered Ford EXP's they are quiet and come for you when you least expect it... hide behind an aluminum light pole...... ya that will help