Quest alternator in sr20det - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

240sxdrive · 07-08-2019, 02:17 PM

Posted this is S-Chassis section but not getting much response.

Hey all,

I've researched using a Quest alternator on an sr20det and know you need to drill out the mounting holes and modify the tensioner mounting bracket or buy the Cody Ace mount.

I bought the 125 amp alternator for the 99-02 Quest and when comparing to the stock SR alternator, the pulley seems to stick out farther then the stock alternator pulley would be.

There's about a 3mm difference which I would think would be enough of a difference to cause issue. Did anyone compare the 2 alternators before installing?

In these pics, you can see the new alternator mounting tabs are higher, so when installed the pulley would be farther out. I could probably grind some of the inside tab closest to the pulley and use washers on the inside of the other tab to take up the difference. Both alternators have the same amount of space between the mounting holes.

Did anyone have to grind these mounting tabs? (not the tensioner mounting tab)

In these pics, the mounting holes are lined up and the pulley on the Quest alternator sticks out farther.

MrMigs · 09-28-2020, 01:06 PM

I've been poking around for an answer to this as well. It looks like people haven't really had an issue with it... or they haven't really posted about it ha ha I don't know. Did you ever get to the bottom of this?

jedi03 · 10-06-2020, 09:03 AM

iirc there was a good install on codyaces website...

Big_MO · 10-06-2020, 10:54 PM

Been running mine for a while never had an issue

LoSt180 · 11-13-2020, 11:56 AM

Did this get sorted out? Was it the correct part, didn't fit, etc? Getting some voltage drop issues so looking into upgrades myself.

jr_ss · 11-19-2020, 07:47 AM

Machine 3mm off either mount, problem solved! It should be pretty easy to take a grinder and use the blade as a guide for the amount needed to remove.

In all honesty, it is less than an 1/8th of an inch and quite a distance from the crank. If it was in close proximity to the crank, it probably would cause more of an issue.

07-08-2019, 02:17 PM	#1
240sxdrive Join Date: Jun 2014 Location: PA Posts: 24 Trader Rating: (0) Feedback Score: 0 reviews	Quest alternator in sr20det Posted this is S-Chassis section but not getting much response. Hey all, I've researched using a Quest alternator on an sr20det and know you need to drill out the mounting holes and modify the tensioner mounting bracket or buy the Cody Ace mount. I bought the 125 amp alternator for the 99-02 Quest and when comparing to the stock SR alternator, the pulley seems to stick out farther then the stock alternator pulley would be. There's about a 3mm difference which I would think would be enough of a difference to cause issue. Did anyone compare the 2 alternators before installing? In these pics, you can see the new alternator mounting tabs are higher, so when installed the pulley would be farther out. I could probably grind some of the inside tab closest to the pulley and use washers on the inside of the other tab to take up the difference. Both alternators have the same amount of space between the mounting holes. Did anyone have to grind these mounting tabs? (not the tensioner mounting tab) In these pics, the mounting holes are lined up and the pulley on the Quest alternator sticks out farther.

09-28-2020, 01:06 PM	#2
MrMigs Nissanaholic! Join Date: Jul 2001 Location: San Gabriel, CA Age: 37 Posts: 1,654 Trader Rating: (5) Feedback Score: 5 reviews	I've been poking around for an answer to this as well. It looks like people haven't really had an issue with it... or they haven't really posted about it ha ha I don't know. Did you ever get to the bottom of this? __________________ Cheap parts for sale: http://zilvia.net/f/showthread.php?t=534430

11-13-2020, 11:56 AM	#5
LoSt180 Zilvia Addict Join Date: May 2013 Location: MD Posts: 966 Trader Rating: (18) Feedback Score: 18 reviews	Did this get sorted out? Was it the correct part, didn't fit, etc? Getting some voltage drop issues so looking into upgrades myself. Last edited by LoSt180; 11-13-2020 at 01:51 PM..

11-19-2020, 07:47 AM	#6
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,052 Trader Rating: (34) Feedback Score: 34 reviews	Machine 3mm off either mount, problem solved! It should be pretty easy to take a grinder and use the blade as a guide for the amount needed to remove. In all honesty, it is less than an 1/8th of an inch and quite a distance from the crank. If it was in close proximity to the crank, it probably would cause more of an issue. __________________ My SR20VET

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10-06-2020, 09:03 AM	#3
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,784 Trader Rating: (8) Feedback Score: 8 reviews	iirc there was a good install on codyaces website...

10-06-2020, 10:54 PM	#4
Big_MO Leaky Injector Join Date: Sep 2017 Location: USA Posts: 67 Trader Rating: (1) Feedback Score: 1 reviews	Been running mine for a while never had an issue