Different FC pulleys?

need RX7 · 01-08-2009, 09:59 PM

I bought a new main pulley for my S4, since mine was really rusty and the timing marks weren't visible. I ordered one from eBay that was supposedly off of an '86. I got it and compared it to my old one, the timing marks match up perfectly but the overall diameter is larger. When it is installed on the car the outer edge scrapes on the timing pointer. Did Mazda change the pulleys from S4 to S5? The one I had before is ~4 1/2" and the new one is ~4 3/4".

Atkins Dan · 01-09-2009, 12:09 PM

The S5 main pulley is larger than the S4..

Dan

need RX7 · 01-09-2009, 01:38 PM

Thanks. Looks like I'm gonna have to hit the old one with the wire wheel.

Kelton · 01-10-2009, 10:34 AM

Rofl that sucks bro.

need RX7 · 01-12-2009, 09:10 PM

Another question kind of stemming from the original question; are the eccentric shaft hubs the same between S4 and S5? I have an extra one that came with the pulley I bought that I'm looking to resell.

01-08-2009, 09:59 PM	#1
need RX7 Clean S4 Nutswinger Join Date: Mar 2008 Location: Sterling Heights, MI iTrader: (0) Posts: 485 Rep Power: 17	Different FC pulleys? I bought a new main pulley for my S4, since mine was really rusty and the timing marks weren't visible. I ordered one from eBay that was supposedly off of an '86. I got it and compared it to my old one, the timing marks match up perfectly but the overall diameter is larger. When it is installed on the car the outer edge scrapes on the timing pointer. Did Mazda change the pulleys from S4 to S5? The one I had before is ~4 1/2" and the new one is ~4 3/4". __________________ -Ted -1986 Mazda RX7 Sport [DD/beater]: engine finally let go at 205k. parts car status. -1986 Mazda RX7 base [resto-mod project]: S5 n/a swap in progress.

01-09-2009, 12:09 PM	#2
Atkins Dan Premium Vendor Join Date: Feb 2008 iTrader: (6) Posts: 265 Rep Power: 17	The S5 main pulley is larger than the S4.. Dan __________________ 82 SuperCharged rx-7 {my toy not the daily driver anymore now under restoration} 88 B2200 rotary powered with a 7inch Camden SuperCharger !RIP! Jan/4/2007 2001 626 5-speed 80k on the clock all stock {Truck replacement} 2005 MAZDA6 V6 WAGON now that is a pimping ride all stock for the moment.. Paid off WWW.AtkinsRotary.com

01-09-2009, 01:38 PM	#3
need RX7 Clean S4 Nutswinger Join Date: Mar 2008 Location: Sterling Heights, MI iTrader: (0) Posts: 485 Rep Power: 17	Thanks. Looks like I'm gonna have to hit the old one with the wire wheel. __________________ -Ted -1986 Mazda RX7 Sport [DD/beater]: engine finally let go at 205k. parts car status. -1986 Mazda RX7 base [resto-mod project]: S5 n/a swap in progress.

01-10-2009, 10:34 AM	#4
Kelton Fried Chicken Join Date: Jan 2009 Location: Alabama iTrader: (0) Posts: 33 Rep Power: 0	Rofl that sucks bro. __________________ 87' GXL Rx-7 97' S10 Ext Cab~DD

01-12-2009, 09:10 PM	#5
need RX7 Clean S4 Nutswinger Join Date: Mar 2008 Location: Sterling Heights, MI iTrader: (0) Posts: 485 Rep Power: 17	Another question kind of stemming from the original question; are the eccentric shaft hubs the same between S4 and S5? I have an extra one that came with the pulley I bought that I'm looking to resell. __________________ -Ted -1986 Mazda RX7 Sport [DD/beater]: engine finally let go at 205k. parts car status. -1986 Mazda RX7 base [resto-mod project]: S5 n/a swap in progress.