Jump to content



SHP 8's on Flatty?


  • Please log in to reply
15 replies to this topic

#1 Threedoor

Threedoor

    Established Member

  • Members
  • PipPipPip
  • 510 posts
  • Gender:Male
  • Location:Indiana
  • Model:Conquest

Posted 19 January 2012 - 09:07 PM

Hey guys,

Planning on a 5 lug swap on my 84 flatty... how much room do we have (stock ride hight)?  I know that the offset is the same (18) on the  6 1/2 x 15 stock 4 lug wheels and the 8 x 16 front SHP 5 lug wheels... and the 215 wide tires on the stockers are almost as wide as the SHP front 225's... so will the front SHP's fit well in the front fender wells?

If yes, how wide a tire can I fit without any rubbing at stock ride hight?

Thanks,

Keith

PS:  I know SHP fronts will fit in back on a flatty, but what about regular rear deep dish 8" wheels in the rear on a flatty?  Do they stick out too much?  I am willing if needed to roll inner fender lip flat (front and rear) but I don't want to stretch or flare the fenders.

Edited by Threedoor, 19 January 2012 - 09:10 PM.






#2 D_Venable

D_Venable

    Have you had your boost today?

  • Members
  • PipPipPipPip
  • 6,583 posts
  • Gender:Male
  • Location:Rogers, MN
  • Model:Conquest

Posted 20 January 2012 - 12:33 AM

SHP 8 on the front will clear the fender, but iirc, it does not clear the strut.

Rear 8's will fit, it all really depends on the tire size. I didn't run widebody rears on mine, but what I did run was close in specs.  Rear 8's are -10mm offset. My Rota 16x8's, with the spacers I was running, gave me an offset of -15mm. Fender are rolled and pulled, and it's slammed on MR2 inserts in short housings with Cosmo springs. All on 205/50r16s

Posted Image

Edited by D_Venable, 20 January 2012 - 12:34 AM.

2011 Silverado
85 Conquest aka DTHSTAR (215whp/251tq on a 12a at 15psi) RIP (for now)
88 TSI parts car
88 TSI SHP Durban Maroon 17C TD05H, MAFT, 9's all around, 13" brakes, MR2's with Anti-M's
Posted Image

#3 D_Venable

D_Venable

    Have you had your boost today?

  • Members
  • PipPipPipPip
  • 6,583 posts
  • Gender:Male
  • Location:Rogers, MN
  • Model:Conquest

Posted 24 March 2012 - 09:46 PM

So today, I was over at speedyquest's, and he put rear 8's all around on his 5-lug converted flatty, with 225/50r16's at each corner.

The front rubbed the front lowest corner of the fender, a little roll and pull with a jack handle gave us JUST enough clearance.

enjoy

Posted Image
Posted Image
Posted Image
Posted Image
Posted Image
Posted Image
Posted Image
Posted Image
2011 Silverado
85 Conquest aka DTHSTAR (215whp/251tq on a 12a at 15psi) RIP (for now)
88 TSI parts car
88 TSI SHP Durban Maroon 17C TD05H, MAFT, 9's all around, 13" brakes, MR2's with Anti-M's
Posted Image

#4 speedyquest

speedyquest

    Established Member

  • Members
  • PipPipPip
  • 1,762 posts
  • Gender:Male
  • Location:La Crosse Wisconsin
  • Interests:bmx, cars, computers
  • Model:Starion

Posted 24 March 2012 - 10:25 PM

Woot Flatty love!!!

Allen
1987 Flatty Starion -  ARP head studs -- 2.5" exhaust -- Hahn Racecraft S16g -- HKS filter --  GodSpeed bar / plate intercooler -- Synapse Bov -- 3 inch GM mas & Maft -- Mazda TPS -- Short route piping -- 5 lug & LSD conversion -- Jolyrgr stainless braided brake lines & oil feed line -- AEM UEGO -- Greddy Profec B II -- Trust front strut brace -- TEP rear strut brace -- D2 coilovers -- GNT poly bushings & mounts -- four 8" rears -- car lightened significantly...  More to come!

1988 Maroon Conquest - Stock other a stage two valvebody in the tranny

Posted Image

#5 Threedoor

Threedoor

    Established Member

  • Members
  • PipPipPip
  • 510 posts
  • Gender:Male
  • Location:Indiana
  • Model:Conquest

Posted 25 March 2012 - 06:37 PM

I'm now running the SHP fronts on my 84 with a hubcentric 10mm spacer giving me an overall offset of +6 instead of +16... they fit fantastic with my 225/50/16's!  No rubbing on either the strut side or the fender, no roll required B)   Without the spacer, there was no resistance to spinning the wheel with the car up on jackstands, but I could just barely hear the tire rubbing the spring perch.  With either a narrower tire, or coilovers with a smaller spring perch I could have run them without a spacer.

Now I just need to do the rears :)  

Keith

#6 pc85

pc85

    Established Member

  • Members
  • PipPipPip
  • 511 posts
  • Gender:Male
  • Location:Lancaster,PA.
  • Interests:Family, Friends, Fitness,
    FAST CONQUEST
  • Model:Conquest

Posted 29 March 2012 - 08:38 AM

Just curious becuase I'm in the process of fitting my flatty with 17" rims and thinking of going with 225-45-17s. My question is if the stock offset of the SHP's is +18 mm and you have a 10 mm spacer, shouldn't the overall offset be +28 mm? How did you get +6 mm?
Posted Image

#7 D_Venable

D_Venable

    Have you had your boost today?

  • Members
  • PipPipPipPip
  • 6,583 posts
  • Gender:Male
  • Location:Rogers, MN
  • Model:Conquest

Posted 29 March 2012 - 06:06 PM

pc, it'll be +8mm with the 10mm spacer. He got +6 because he thought the offset of the stock wheel was +16.

You wouldn't get +28 because your not measuring the offset from the wheel's mounting surface anymore, your measuring from the hub. doing it this way gives you what the offset would be if you were running a wheel without spacers, but with the tire positioned the same relative to your fenders

Edited by D_Venable, 29 March 2012 - 06:07 PM.

2011 Silverado
85 Conquest aka DTHSTAR (215whp/251tq on a 12a at 15psi) RIP (for now)
88 TSI parts car
88 TSI SHP Durban Maroon 17C TD05H, MAFT, 9's all around, 13" brakes, MR2's with Anti-M's
Posted Image

#8 pc85

pc85

    Established Member

  • Members
  • PipPipPip
  • 511 posts
  • Gender:Male
  • Location:Lancaster,PA.
  • Interests:Family, Friends, Fitness,
    FAST CONQUEST
  • Model:Conquest

Posted 30 March 2012 - 07:05 AM

Thanks D, the spacer thing always throws me off, but the 6 mm overall offset just didn't add up with an 18 mm stock. Good news is threedoor has 225-50-16s with no rubbing issues so 225-45-17s should fit no problem.

Edited by pc85, 30 March 2012 - 07:12 AM.

Posted Image

#9 Threedoor

Threedoor

    Established Member

  • Members
  • PipPipPip
  • 510 posts
  • Gender:Male
  • Location:Indiana
  • Model:Conquest

Posted 01 April 2012 - 01:14 AM

View PostD_Venable, on 29 March 2012 - 06:06 PM, said:

pc, it'll be +8mm with the 10mm spacer. He got +6 because he thought the offset of the stock wheel was +16.

You wouldn't get +28 because your not measuring the offset from the wheel's mounting surface anymore, your measuring from the hub. doing it this way gives you what the offset would be if you were running a wheel without spacers, but with the tire positioned the same relative to your fenders

Yup, started out as a typo on my part (possibly even in a different thread) and I did my math based on the typo!  Thanks for the correction D_Venable :)

Keith

#10 Threedoor

Threedoor

    Established Member

  • Members
  • PipPipPip
  • 510 posts
  • Gender:Male
  • Location:Indiana
  • Model:Conquest

Posted 01 April 2012 - 01:23 AM

View Postpc85, on 30 March 2012 - 07:05 AM, said:

Thanks D, the spacer thing always throws me off, but the 6 mm overall offset just didn't add up with an 18 mm stock. Good news is threedoor has 225-50-16s with no rubbing issues so 225-45-17s should fit no problem.

A 225/45/17 is almost 1/3 inch larger diameter than 225/50/16... that may put you into the spring perch.  The stock 215/60/15's are just a hair bigger around than your 17's, but the added width may put you rubbing.... there is very little clearance stock.  What offset and width 17's are you planning on?

Keith

#11 pc85

pc85

    Established Member

  • Members
  • PipPipPip
  • 511 posts
  • Gender:Male
  • Location:Lancaster,PA.
  • Interests:Family, Friends, Fitness,
    FAST CONQUEST
  • Model:Conquest

Posted 09 April 2012 - 08:02 PM

View PostThreedoor, on 01 April 2012 - 01:23 AM, said:


A 225/45/17 is almost 1/3 inch larger diameter than 225/50/16... that may put you into the spring perch.  The stock 215/60/15's are just a hair bigger around than your 17's, but the added width may put you rubbing.... there is very little clearance stock.  What offset and width 17's are you planning on?

Keith
225/50/16s are 24.9" diameter, 225/45/17s are 25" diameter. That's only .1" total diameter difference or just .05" closer to the spring perch than the 16s and the tread widths are both 8" so for all practical purposes they are pretty much exactly the same overall size. Anyway, I know that will be cutting it too close so I'm going to go with 215/45/17s and should be OK.
Posted Image

#12 Threedoor

Threedoor

    Established Member

  • Members
  • PipPipPip
  • 510 posts
  • Gender:Male
  • Location:Indiana
  • Model:Conquest

Posted 30 June 2012 - 01:41 PM

View Postpc85, on 09 April 2012 - 08:02 PM, said:

225/50/16s are 24.9" diameter, 225/45/17s are 25" diameter. That's only .1" total diameter difference or just .05" closer to the spring perch than the 16s and the tread widths are both 8" so for all practical purposes they are pretty much exactly the same overall size. Anyway, I know that will be cutting it too close so I'm going to go with 215/45/17s and should be OK.

Just noticed this reply, haven't been keeping up with the board for a while due to prepping for construction of my new shop :)  225/50/16 is 24.86 and 225/45/17 is 24.97 inches, so yeah only .11 inches larger diameter, not .33  

The long and short of it is that pc85 is correct, with the same overall offset as I am now running a 225/45/17 should fit just as well as a 225/50/16.

Later,

Keith

#13 danmanTSI

danmanTSI

    Member

  • Members
  • PipPip
  • 403 posts
  • Gender:Male
  • Location:pittsburgh, pa
  • Model:Starion

Posted 03 July 2012 - 05:51 PM

Do the 8in rears rub on a stock flatty suspension?
Posted Image

#14 speedyquest

speedyquest

    Established Member

  • Members
  • PipPipPip
  • 1,762 posts
  • Gender:Male
  • Location:La Crosse Wisconsin
  • Interests:bmx, cars, computers
  • Model:Starion

Posted 03 July 2012 - 07:00 PM

Ive personally not had issues with rubbing on the suspension with the setup pictured up top. Mine has a hub swap to the 5 lug but the suspension etc is still all flatty

Allen
1987 Flatty Starion -  ARP head studs -- 2.5" exhaust -- Hahn Racecraft S16g -- HKS filter --  GodSpeed bar / plate intercooler -- Synapse Bov -- 3 inch GM mas & Maft -- Mazda TPS -- Short route piping -- 5 lug & LSD conversion -- Jolyrgr stainless braided brake lines & oil feed line -- AEM UEGO -- Greddy Profec B II -- Trust front strut brace -- TEP rear strut brace -- D2 coilovers -- GNT poly bushings & mounts -- four 8" rears -- car lightened significantly...  More to come!

1988 Maroon Conquest - Stock other a stage two valvebody in the tranny

Posted Image

#15 danmanTSI

danmanTSI

    Member

  • Members
  • PipPip
  • 403 posts
  • Gender:Male
  • Location:pittsburgh, pa
  • Model:Starion

Posted 03 July 2012 - 09:11 PM

View Postspeedyquest, on 03 July 2012 - 07:00 PM, said:

Ive personally not had issues with rubbing on the suspension with the setup pictured up top. Mine has a hub swap to the 5 lug but the suspension etc is still all flatty

Allen

Thanks for the info, definitely good to know. I have one shp 8 I could put in the rear but regular 8s should work for now.
Posted Image

#16 speedyquest

speedyquest

    Established Member

  • Members
  • PipPipPip
  • 1,762 posts
  • Gender:Male
  • Location:La Crosse Wisconsin
  • Interests:bmx, cars, computers
  • Model:Starion

Posted 04 July 2012 - 12:01 AM

Keep in mind that shp 8's will have a different offset. I am currently running non shp 8 inch rears on all fours with 225/50/16's. No rubbing on the suspension but you will need to pull the fenders a bit probably.

Allen
1987 Flatty Starion -  ARP head studs -- 2.5" exhaust -- Hahn Racecraft S16g -- HKS filter --  GodSpeed bar / plate intercooler -- Synapse Bov -- 3 inch GM mas & Maft -- Mazda TPS -- Short route piping -- 5 lug & LSD conversion -- Jolyrgr stainless braided brake lines & oil feed line -- AEM UEGO -- Greddy Profec B II -- Trust front strut brace -- TEP rear strut brace -- D2 coilovers -- GNT poly bushings & mounts -- four 8" rears -- car lightened significantly...  More to come!

1988 Maroon Conquest - Stock other a stage two valvebody in the tranny

Posted Image




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users