| [ Total Views: 858 | Total Replies: 15 | Thread Id: 100887 ] |
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 sander288
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| posted on February 14th, 2013 at 02:04 PM |
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Power Pulley???
Hi Guys;
Seeing that I've got a weeeee 1300 I wanted to waste as little HP as possible; so was considering getting a power pulley.
I know the EMPI variety all require a sand seal that either machines in or bolts into the front of the case; I don't like the sound of this so was
looking at some other pulleys.
The ones below have a steel hub and grooves like the stock pulley. Do these pulleys need a sand seal or any changes to the case? I.e. do they install
like a stock crank pulley?
The other cooler option is the 356 pulley (see link to Flat4 Japan... you'll need google translate). I'm not sure how big these pulleys are
though
http://www.cbperformance.com/ProductDetails.asp?ProductCode=2020
https://www.flat4.co.jp/products/detail.php?product_id=6995
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Craig Torrens
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| posted on February 14th, 2013 at 02:33 PM |
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the sand seal on the empi pulley pushes in......it doesn't need bolts or mods to the case.
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bajachris88
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| posted on February 14th, 2013 at 03:04 PM |
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its a sleeve
(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta! |
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 matberry
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| posted on February 14th, 2013 at 05:24 PM |
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But a sand seal is a weaker pulley. Most aftermarket have incorrect dimensions on the crankshaft ie loose fit that can wreck cranks. Go steel hub JC
or Berg IMO
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69bug
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| posted on February 14th, 2013 at 06:53 PM |
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I've bought a gene berg one,
Could not be happy has made a huge difference to the motor
1969 1500
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on February 14th, 2013 at 07:25 PM |
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I bought a Berg for the motor I'm building atm......quality is excellent.
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sander288
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| posted on February 14th, 2013 at 08:52 PM |
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Did you guys get the achiever or equalizer pulleys?
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on February 14th, 2013 at 09:07 PM |
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I bought this one.
http://www.geneberg.com/product_info.php?cPath=7_3036&products_id=3050
not very good for the street, but should be good for hillclimbs ! 
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ClockworkMonkey
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| posted on February 14th, 2013 at 10:39 PM |
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What does changing the pulley size actually do? More hp or better response, something like that?
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sander288
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| posted on February 15th, 2013 at 08:15 AM |
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It slows down the fan so that when the engine is rev'd your fan is still cooling efficiently; its ideal for motors that sit above 4000rpm most of the
time. Your basically not wasting power on turning a fan more than you need to.
Alot of vee guys run their fan belts loose to waster as little hp because their rules don't allow power pulleys.
http://www.geneberg.com/cat.php?cPath=7_229_2836
Had a look at the pulley Craig; seems a little small for a roundy roundy car; the other power pulleys are 5.7in from what I can gather
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69bug
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| posted on February 15th, 2013 at 02:12 PM |
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I got the one that is a standard diameter, but balanced.
1969 1500
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empi
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| posted on February 15th, 2013 at 02:40 PM |
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why do it to a 1300?
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sander288
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| posted on February 15th, 2013 at 04:19 PM |
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My 1300 isn't stock 
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hellbugged
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| posted on February 15th, 2013 at 04:52 PM |
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Power pulley sized achiever for you Sean..... But I would go to dog house cooler if so
I run both achiever on the stocka and equalizer on the hotty.... Both stock size
Don't expect to be able to swap out at the track, they are a tight fit and don't come off without pullers
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sander288
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| posted on February 15th, 2013 at 05:10 PM |
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Thanks for the help fellas
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Gracey
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| posted on February 16th, 2013 at 11:54 AM |
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I've used a Berg pullley in the past, great quality however super tight fit, as said above you'll need a puller to remover.
I've got a Scat alloy power pulley that I use and it's a good fit, about the same as a std pulley, I got it from Aircooled.net.
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