U/D pulleys on L98's
Burning Brakes
Joined: Nov 2000
Posts: 1,040
Likes: 2
From: BowlingGreen KY
Re: U/D pulleys on L98's (HeeHaw89)
Try Eckler's or Mid America. I don't have them but I've been told they will give a slight hp gain and that is one of my planned mods. Eckler's Spring catalog pg 165, price $159.99. Mid America catalog 142b pg4-22 price $99.99. :cheers:
[Modified by KYVette90, 3:02 PM 3/18/2002]
[Modified by KYVette90, 3:02 PM 3/18/2002]
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
Re: U/D pulleys on L98's (HeeHaw89)
The crank underdrive pulley was my first mod.
I got a nice gain from it. There are downsides to the underdrive pulley.
At idle with the headlights on, the battary will drain a bit.
Vic
I got a nice gain from it. There are downsides to the underdrive pulley.
At idle with the headlights on, the battary will drain a bit.
Vic
Burning Brakes
Joined: Jan 2002
Posts: 893
Likes: 0
From: Liberal Kansas
Re: U/D pulleys on L98's (Vic'89)
I have the March AMP series and have had no charging problems yet. About gains I can't say. SOTP was zill but the motor does rev faster. Every bit helps in my book :D
Racer
Joined: Mar 2001
Posts: 323
Likes: 0
From: Slidell la
Cruise-In III Veteran
Re: U/D pulleys on L98's (KYVette90)
Added the March set to my 85. Did gain HP. Only problem I have is at idle the power steering pump is not turning fast enough to provide enough assistance. If you bring the RPM up above 650 the problem goes away. Currently mine idles at 600. No problems with charging or A/C.
I like this mod. Recorded a 13.916 in 1/4 after this mod and doing the TB coolant bypass. Next time I will do 1 mod at time an head to the track.
:yesnod:
I like this mod. Recorded a 13.916 in 1/4 after this mod and doing the TB coolant bypass. Next time I will do 1 mod at time an head to the track.
:yesnod:
Burning Brakes
Joined: Jan 2000
Posts: 1,015
Likes: 3
From: Esko MN
Re: U/D pulleys on L98's (HeeHaw89)
Friend,
I have just the crank underdrive pulley. At idle, even with the lights off, it will drain the battery. I would recommend the two pulley system with the larger alternator pulley to avoid this.
Greg
I have just the crank underdrive pulley. At idle, even with the lights off, it will drain the battery. I would recommend the two pulley system with the larger alternator pulley to avoid this.
Greg
Team Owner
Joined: Jun 2000
Posts: 22,379
Likes: 94
From: Damn taxes! Pimpin' Ain't Easy in Massachusetts
2018 C4 of Year Finalist
St. Jude Donor '03-'04-'08-'09
Re: U/D pulleys on L98's (HeeHaw89)
I've been thinking of getting a set also, like you guys say every bit helps.
How much work are they to put on? Any special tools?
Thanks
How much work are they to put on? Any special tools?
Thanks
Race Director
Joined: May 1999
Posts: 14,267
Likes: 1
From: Plymouth MI Formerly Milford, MA MI
W. Detroit Events Coordinator
Cruise-In VI Veteran
Cruise-In VII Veteran
Cruise-In VII Autocross Champ
Re: U/D pulleys on L98's (Mr. Magoo)
I've been thinking of getting a set also, like you guys say every bit helps.
How much work are they to put on? Any special tools?
Thanks
How much work are they to put on? Any special tools?
Thanks
I got you covered kid :cheers:
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Team Owner
Joined: Jun 2000
Posts: 22,379
Likes: 94
From: Damn taxes! Pimpin' Ain't Easy in Massachusetts
2018 C4 of Year Finalist
St. Jude Donor '03-'04-'08-'09
Re: (scorp508)
I'm thinking of ordering the 3 PC Pulley set as well as the Air Pump Eliminator kit, can I use the existing size belt or do I need a new size?
Hey according to Corvette Central I'll gain 40 HP with both kits combined!!
:rolleyes: :lol: :lol: :lol: :lol:
Hey according to Corvette Central I'll gain 40 HP with both kits combined!!
:rolleyes: :lol: :lol: :lol: :lol:
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Re: (Mr. Magoo)
I'm thinking of ordering the 3 PC Pulley set as well as the Air Pump Eliminator kit, can I use the existing size belt or do I need a new size?
Burning Brakes
Joined: Jan 2002
Posts: 893
Likes: 0
From: Liberal Kansas
Re: (scorp508)
You will need a new belt. Dayco 5060905 . March does make a 3 pulley set. Here is a link http://www.marchperformance.com/pg10.html
[Modified by Rob90, 10:42 AM 3/19/2002]
[Modified by Rob90, 10:42 AM 3/19/2002]
Team Owner
Joined: Jun 2000
Posts: 22,379
Likes: 94
From: Damn taxes! Pimpin' Ain't Easy in Massachusetts
2018 C4 of Year Finalist
St. Jude Donor '03-'04-'08-'09
Re: (scorp508)
Scorp it'a a 3 PC Pulley set. Crankshaft Pulley, Alternator Pulley and Water Pump pulley.
$160.00? Narrrrrr that's for the Black Anodized finish...........I'm going with the Polished finish for $170.00. :jester
It is expensive but it does clean everything up, if I get any performance out of it it's a plus..............but I doubt it. :rolleyes:
$160.00? Narrrrrr that's for the Black Anodized finish...........I'm going with the Polished finish for $170.00. :jester
It is expensive but it does clean everything up, if I get any performance out of it it's a plus..............but I doubt it. :rolleyes:
Team Owner
Joined: Jun 2000
Posts: 22,379
Likes: 94
From: Damn taxes! Pimpin' Ain't Easy in Massachusetts
2018 C4 of Year Finalist
St. Jude Donor '03-'04-'08-'09
Re: (Rob90)
Thanks Rob. :)
This will fit for both the pulleys and Eliminator kit right?
[Modified by Mr. Magoo, 12:26 PM 3/19/2002]
This will fit for both the pulleys and Eliminator kit right?
[Modified by Mr. Magoo, 12:26 PM 3/19/2002]
Burning Brakes
Joined: Jan 2002
Posts: 893
Likes: 0
From: Liberal Kansas
Re: (Mr. Magoo)
The Eliminator does not affect the size of belt you need but the pullies will. If you get the March pully set it will give you a part # for the belt. I have the list at home with the right #s for the 86 2 and 3 pulley set :D
