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Posted by: nine14cats Mar 19 2014, 04:30 PM

I'm curious as to what the factory shipped size wise for wheels on 914-6 GT's. I am talking factory flared GT's.

Can anyone help me out?

Thanks,

Bill P.

Posted by: rick 918-S Mar 19 2014, 05:01 PM

I seem to recall they were 15 x7's but I could be mistaken.

Posted by: Vysoc Mar 19 2014, 05:13 PM

TC has a copy of the factory spec sheet, I think it was 8" x 15" in the Rear and 7" x 15" in the font Fuchs Alloys obviously.

His friend Steve has the Eric Strenger M471 in Tampa which would have the proper sizes which on that one I think they were 7" x 15" on all four corners?

My 2 cents.

Vysoc

Posted by: Johny Blackstain Mar 19 2014, 05:26 PM

I seem to remember reading recently that they were 15"x7" all around for most & some (not all) had 15"x8" in the back, but don't hold me to that.

Posted by: Eric_Shea Mar 19 2014, 07:23 PM

15x7 front
15x8 rear

M471 cars should have 15x6 all around with spacers (Strenger car)

Posted by: nine14cats Mar 20 2014, 10:37 AM

Thanks Guys!

I have 15x7 and 15x8 Fuchs. What is the original tire sizes?

Bill P.

Posted by: brant Mar 20 2014, 10:39 AM

I've seen 6's

Posted by: SirAndy Mar 20 2014, 11:11 AM

Below is the actual factory list of combinations. There are quite a few different combinations that were used.

Yeah, i know it's in German ...

Einpresstiefe = Offset (in mm)
Felgen = Wheels
Reifen = Tires






Attached thumbnail(s)

Posted by: SirAndy Mar 20 2014, 11:15 AM

So bottom line, they used:

Front / Rear

7"x15 / 7"x15
7"x15 / 8"x15
7"x15 / 9"x15
8"x15 / 8"x15
8"x15 / 9"x15
9"x15 / 11"x15

and had a 35mm spacer in the front on the combinations that used 7" front wheels ...

Posted by: Dave_Darling Mar 20 2014, 03:41 PM

Andy, where is that info from? Am I wrong to think that there were no 285/40/15 tires (which are called for in the document there) back when the 914 was new?

The GTs were race cars. They probably had a variety of different wheels at different times, dictated mainly by the rule set of whatever race they were running. And the rules could and did change--and one car might run different series with different rules as well.

Any particular reason you need to know what was originally used on the (relatively few) Factory-built 914-6GT cars? Are you restoring one?

--DD

Posted by: nine14cats Mar 20 2014, 04:11 PM

Thanks Andy! That helps a bunch!

Dave, How's it going? Long time no see!

I'm thinking of running Leeloo at Parade. I'd like to run her in Improved 2 class. She is really close in configuration but there are a few things such as having to put back in the front headlights and such. Also there are some rules regarding size of rims.

I'm trying to understand the backdating/updating rules as the tub is a 1971 and now has metal GT flares and a full interior with bolt in cage. It also has a 7" wide front rims and 8" wide rears, and there are rules pertaining to how much rim you can have and stay in Improved. Oh...and the motor is a nicely built Carrera 3.2 with Steve Wong chip. It's a great motor.

I recently sold my Spec Boxster and am getting ready to start on a full blown race car project, so this would be more for street / AX duty.

Thanks,

Bill P.

Posted by: brant Mar 20 2014, 04:25 PM

I don't see how a 3.2 motor in place of a 2.0 motor is improved....
it sounds like a GT class car to me!

back in the day when I did club racing

- stock was stock
- improved was stock with minor wheel upgrades or brake upgrades... but 100% stock displacement
- and anything with larger displacement was GT

brant

Posted by: SirAndy Mar 20 2014, 04:33 PM

DGVWPB

And yes, there were tires in that size when the 914 was new.

In fact, 285/40/15 on 9" wheels and 345/35/15 on 11" wheels was a popular wheel & tire combo on quite a few cars at the time.

Posted by: johnhora Mar 20 2014, 04:47 PM

agree with Brant....GT class 1-6
the class is determined by a weight/HP performance index
the rest of the rules are mainly like your Spec Boxster
check out the rules here at PCA Club Racing rules location
would be a fun race car...not sure how many are running in these GT classes anymore

https://docs.google.com/viewer?url=http%3A%2F%2Fwww.pca.org%2Fportals%2Fcr%2F2014%2520PCA%2520Club%2520Racing%2520Rule%2520Book.pdf

Posted by: nine14cats Mar 20 2014, 04:58 PM

I'm currently racing in PCA Club Racing and Nasa with other cars but I'm talking about Parade Autocross for street cars and specifically a 914-6.

I don't make the rules, I'm just trying to interpret them. There are no GT classes in PCA Parade rules.

Here is the link to Zone 7's AX rules, which are identical to Parade's except for where noted. They now have Showroom Stock, Production, Improved and Modified. Since the car is basically a street car without the headlights, I'm trying to figure out where it fits.

http://www.svr-pca.org/sites/all/docs/AX/2014Z7AXRules.pdf

Thanks,

Bill P.

Posted by: Dave_Darling Mar 21 2014, 09:07 AM

Wait, is this the "Chinese menu" points system that they had been using a few years back, or is this yet another complete revision of the class structure??

--DD

Posted by: nine14cats Mar 21 2014, 09:26 PM

Hi Dave,

Loma Prieta Region is running Parade rules for their AX season. Golden Gate Region is running the points system.

I'm thinking of running at Parade, so I'm trying to get the car into the Improved 2 class according to Parade AX rules. I need to do a few things, but the car is close.

Bill P.