Welcome to the Connecticut Z Car Club Forums




Username:  
Password:  
Log me on automatically each visit
Register 
It is currently Thu Mar 28, 2024 10:40 am
Welcome to the Connecticut Z Car Club Discussion Forums   
If you have trouble logging in or encounter any issues, please send an email to webmaster@ctzcc.com.

All times are UTC - 5 hours





Post new topic Reply to topic  [ 27 posts ]  Go to page Previous  1, 2
  Print view Previous topic | Next topic 
Author Message
PostPosted: Fri Mar 21, 2014 11:57 pm 
Offline
User avatar

Joined: Wed Feb 29, 2012 11:44 am
Posts: 588
Location: New Haven, CT
Hm, actually 205/50/15 is the more popular size rather than 225. Might be another good pick if you are running 6" wide wheels, but hope the 225's work!

_________________
Justin
1986 Z31 NA 2+0


Top
 Profile  
 
PostPosted: Sat Mar 22, 2014 11:31 am 
Offline

Joined: Fri Sep 23, 2011 2:10 pm
Posts: 380
Location: Tolland, CT
already running 215's so going down to 205 not an option for me.
Don't forget I'm trying to get a wider patch to help with bite
...... 360 to 400 lbs of torque going to the ground with the SBC.
I'll put a spring rubber in the rear this week b4 trying the tires.
Jack

_________________
John D .... original 240 past, 260v8Roadster current


Top
 Profile  
 
PostPosted: Sun Mar 23, 2014 7:41 pm 
Offline

Joined: Wed Jul 23, 2008 2:38 pm
Posts: 3411
Location: rhode island
I'm running 225/45/15 Toyo r888 and have 280 shock mounts on. With out those I would rub tires in the rear. This is the biggest tire I think will fit without cutting the wheel wells.


Top
 Profile  
 
PostPosted: Sun Mar 23, 2014 9:14 pm 
Offline

Joined: Fri Sep 23, 2011 2:10 pm
Posts: 380
Location: Tolland, CT
Paul, what do the 280 shock mounts do ....... lower or raise the car?

_________________
John D .... original 240 past, 260v8Roadster current


Top
 Profile  
 
PostPosted: Mon Mar 24, 2014 10:42 am 
Offline
User avatar

Joined: Wed Feb 29, 2012 11:44 am
Posts: 588
Location: New Haven, CT
john durand wrote:
already running 215's so going down to 205 not an option for me.
Don't forget I'm trying to get a wider patch to help with bite
...... 360 to 400 lbs of torque going to the ground with the SBC.
I'll put a spring rubber in the rear this week b4 trying the tires.
Jack


Yes, but also keep in mind compound is also (usually moreso) important with respect to width.

205's with better and more aggressive rubber compound will bite and grip a lot more than even a 245 of harder compound. Of course it will also wear faster as well.

_________________
Justin
1986 Z31 NA 2+0


Top
 Profile  
 
PostPosted: Mon Mar 24, 2014 12:06 pm 
Offline

Joined: Fri Sep 23, 2011 2:10 pm
Posts: 380
Location: Tolland, CT
Justin, your correct, but a wider tire of equal compound will be even
better as long as contact patch is proper. Depending on the weight of the car and suspension set up a wider tire might not yield a good contact if the suspension doesn't have adjustment available to compensate, thus, contact patch may not be optimal. With my original v8 there was just enough extra weight to cause tires to wear on the inside, and there is no adjustment for this.
I put a spring rubber in to lift it and adjusted for it that way.
In my case, I'm not racing the car so I'm looking for street properties and wear
on this tire set. If I start autoxing, I'll have a different set up. With my car's mods I'd be running in a tough class so unless I do an r200, brakes, wheels/tires etc. the car wouldn't be optimized for competition. As it is, it would still be fun, but competitive? Hard for me to drive less than all out and
I'm not sure the r180 can handle the torque.

_________________
John D .... original 240 past, 260v8Roadster current


Top
 Profile  
 
PostPosted: Thu Mar 27, 2014 9:52 am 
Offline

Joined: Wed Jul 23, 2008 2:38 pm
Posts: 3411
Location: rhode island
The 280 shock mounts are 2" taller. Even with all new springs on, (1" lowering entire car) It just seems the 240 sits lower in the rear than a 280. just something I notice when they sit side by side. So I basically raised my rear end 2" but really 1' to stock height. Gee, it sits perfectly level now. I just happen to have a set, but they do cost a lot if you went to buy new. A bigger foot print is better, but it's also tire compound. My Toyo R888's, (and just think there is probably better,) gave me quite the traction on the corners at NH..............to the point I think I would of snapped my steering column before they would give out. I heard the R180 can handle quite a bit of torque until you can get a R-200. Then I would suggest if you have a lot of torque, get the Porsche axle shafts from wolf racing. I'm using the ZX ones for now. Of course I'm still running my original engine, no mods there..................Yet.


Top
 Profile  
 
PostPosted: Thu Mar 27, 2014 11:28 am 
Offline

Joined: Fri Sep 23, 2011 2:10 pm
Posts: 380
Location: Tolland, CT
Paul, yeah, I noticed the rear does tend to sit a bit lower.
I don't know the exact age or spring set that's on the car,
don't notice any sag or signs of fatigue, so for now I'll see
what I can do with spring rubbers.
In the early days, when running in "stock" .... we'd cut a
turn or so off the OE springs and put hard stops on, then
paint the koni's to stock color ......... and back then we'd
go around to tire dealers looking for sets of worn (slick)
tires of the type and size we wanted. I used to run different
profiles front and back depending on desired handling.
Back then radials were not real common. Had to be creative.
We never even thought of stretching the letter of the class regs.
Jack

_________________
John D .... original 240 past, 260v8Roadster current


Top
 Profile  
 
PostPosted: Fri Mar 28, 2014 3:47 pm 
Offline

Joined: Fri Sep 23, 2011 2:10 pm
Posts: 380
Location: Tolland, CT
Okay guys. The 225/50/15's are fine. Actually more clearance than
the 215/60/15's. Here's some pix


Attachments:
File comment: 225/50/15 front turning .... no issues due to extra width
100_1502.JPG
100_1502.JPG [ 789.57 KiB | Viewed 6072 times ]
File comment: 225/50/15 previous pic should read 215/60/15
100_1500.JPG
100_1500.JPG [ 1.34 MiB | Viewed 6072 times ]
File comment: 215/50/15 rear
100_1497.JPG
100_1497.JPG [ 1.58 MiB | Viewed 6072 times ]

_________________
John D .... original 240 past, 260v8Roadster current
Top
 Profile  
 
PostPosted: Sun Mar 30, 2014 8:30 am 
Offline

Joined: Wed Jul 23, 2008 2:38 pm
Posts: 3411
Location: rhode island
That'll work. :thumbs_up: Do you need a hard top for that? I was thinkin of cutting this roof off a 240 I have. :?


Top
 Profile  
 
PostPosted: Sun Mar 30, 2014 10:39 am 
Offline

Joined: Fri Sep 23, 2011 2:10 pm
Posts: 380
Location: Tolland, CT
Nice thought, but I wanted a "roadster". I had a TR7 convertible top but it
wouldn't fold so it was either on or off, alla hardtop. So I had the fold up
travel top made just to have something if got caught out and keep inside dry.
Works fine.

I can't figure out why the pix came out soooooo big. I was able to reduce them
somehow in an earlier post but now can't find anyway to view smaller image other
than to open in another tab. Anyone have an answer?

_________________
John D .... original 240 past, 260v8Roadster current


Top
 Profile  
 
PostPosted: Sun Mar 30, 2014 10:00 pm 
Offline

Joined: Sun Apr 01, 2012 4:19 pm
Posts: 1644
Did you try changing the size before uploading them?


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 27 posts ]  Go to page Previous  1, 2

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 10 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron









Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
mile200 v1.0.1 designed by Team -Programming forum- .