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Discussion Starter #1
Anybody got a photo of the JRSC Y8 (3 RIB) Crank pulley or a photo of it next to a stocker?

Was there ever a 4 rib crank pulley produced by Jackson Racing?
 

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Discussion Starter #3
Must spread rep before spreading legs for Paterico again. I'm assuming this is the only version produced, and that it is spaced differently than stock? (closer to motor)
 

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Discussion Starter #7
051-423 is the high boost pulley

Discontinued and unavailable afaik but might be worth calling moss motors
Looks like I received 051-247. 051-423 is out of stock. I got one of the last ones. I plan on creating this in solidworks to reproduce, what alterations would you make?
 

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Meat Popsicle
91 CRX Si
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Well, I would like to see a dampened pulley instead of a solid unit but that's unlikely.

Larger diameter would be the easiest thing.

I have all of the parts that are in demand to be reproduced...the upper alternator/idler bracket and the lower alternator bracket. If you're serious about reproducing either of these, let me know and maybe we can work something out for you to take measurements
 

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unless you take care to lower the intkae temps a bit more, I would put a larger pulley on hold for the moment.

maybe a lunar core modified to work?
 

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Discussion Starter #10 (Edited)
Well, I would like to see a dampened pulley instead of a solid unit but that's unlikely.

Larger diameter would be the easiest thing.

I have all of the parts that are in demand to be reproduced...the upper alternator/idler bracket and the lower alternator bracket. If you're serious about reproducing either of these, let me know and maybe we can work something out for you to take measurements
Appreciate this. Just saw your PM. Perhaps I can give you a deposit or something to spec them out. Moss has basically said what is in stock now will never be produced again (and is expensive).

I got one of the last new crank pulleys, and I'm trying to find the source of the idler pulleys. The idler bracket itself should be very easy to reproduce.

I want to ensure that there is at least a source to get these parts in the future. It seems like EVERYONE forgets to take off the idler bracket and crank pulley when they go to sell the kits, and right now it'd cost you ~$600 to get those few items from Moss while they last, this doesn't include the alternator bracket which seems to be sold out.

I have 3d printing capabilities too, so I can certainly send you prototypes to play with fitment on things if you're interested.

Adding a damper to the pulley may not be realistic, but do you think it's necessary considering you have the blower and accessories pulling against the pulley to potentially dissipate vibrations?

I think @bone would be a good person to ask. He is pretty dead-set on never running on a non-dampened pulley..

unless you take care to lower the intkae temps a bit more, I would put a larger pulley on hold for the moment.

maybe a lunar core modified to work?
I can't do any complex casting projects like a modified blower housing for a lunar core, only reasonably-sized milled and lathed stuff (brackets, pulleys..)

But you bring up a valid point. Would it be worthwhile to just reproduce the crank pulley in stock diameter and then make the boost up by producing a small snout pulley?

Just how much boost can you get away with on the stock unit? It seems like some people here were running 10lbs/200whp without heat issues! I believe that is where the diameter of the crank should be. Right up to the point where heat becomes an issue.
 

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Meat Popsicle
91 CRX Si
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So like you've already said, the most commonly missed parts are the upper alternator bracket (the one with the idler pulleys), the lower alternator bracket (the modified JRSC version used for the Y7/Y8 kits), and the offset JRSC crank pulley.

There are other parts that are often missed that aren't required for make the kit work...stuff like the FMU, the pressure switch, the FPR relocation adapter, etc. which aren't worth worrying about.


For what it's worth, IAT temps really aren't all that big of an issue on the street where someone may do on occasional pull through a couple gears. I spin my supercharger at around 15,000 RPM which is beyond what it's rated for. Even with 100+ degree ambient temps and my intercooler pump off, I've only seen IATs at around 160 degrees Fahrenheit with normal street use. The stories you hear about catastrophic failures usually occur when someone is spinning the blower much faster and is autocrossing the car.

Just how much boost can you get away with on the stock unit? It seems like some people here were running 10lbs/200whp without heat issues! I believe that is where the diameter of the crank should be. Right up to the point where heat becomes an issue.
It's not at all about boost, it's all about the speed of the supercharger. Your exhaust setup and cam choice will play the biggest part in how much boost you see on the gauge. I've seen guys running similar blower speeds that read 10PSI on their gauges and I've only seen about 7.6PSI in my datalogs with my exhaust setup and cam choice. Less boost doesn't necessarily mean less horsepower but more boost always means more heat.
 

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I think only pieces missing from my ZC kit is this bracket thingymabob.
Did Y8 kits have similar?



988-041 S/C SUPPORT BRACKET KIT 2
051-083 BOLT, FLANGE, M10 X 1.25 X 20 1 pc
051-186 NUT, HEX FLANGE M8-1.25 1 pc
051-558 SPACER 21/64 X 1 X 0.75 1 pc
051-559 ADAPTOR, SUPPORT BRACKET 2 1 pc
051-560 BOLT FLANGED M8X45X1.25 12AF 1 pc
051-563 BRACKET, ENGINE TO S/C BRACE 1 pc
 

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Discussion Starter #14
I think only pieces missing from my ZC kit is this bracket thingymabob.
Did Y8 kits have similar?



988-041 S/C SUPPORT BRACKET KIT 2
051-083 BOLT, FLANGE, M10 X 1.25 X 20 1 pc
051-186 NUT, HEX FLANGE M8-1.25 1 pc
051-558 SPACER 21/64 X 1 X 0.75 1 pc
051-559 ADAPTOR, SUPPORT BRACKET 2 1 pc
051-560 BOLT FLANGED M8X45X1.25 12AF 1 pc
051-563 BRACKET, ENGINE TO S/C BRACE 1 pc
Moss Motors said:
051-560 BOLT,HEX FLANGE,M8 X 1.25 X 45 $1.99
051-558 SPACER .328 X 1 X 0.75 $11.99
051-083 BOLT,HEX FLANGE,M10 X1.25 X 20 $1.99
051-186 NUT,HEX FLANGE, M8 X 1.25 $0.99

The rest are out of stock

This piece would be very easy to reproduce -- even in small quantities, but is there evidence that it is needed and there would be ANY demand? If you want one, just take some measurements of the bar length and I can have one waterjetted.
 

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Meat Popsicle
91 CRX Si
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I've never heard of a manifold cracking and none of the kits aside from the ZC kit mention this as a part. The earlier version of the CCW M45 had a mount cast into the case for this bracket:



This was from a blower that was from the original "Sebring" branded kit. My guess is that this was an early design idea that was later scrapped because it was deemed unnecessary
 

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I've never heard of a manifold cracking and none of the kits aside from the ZC kit mention this as a part. The earlier version of the CCW M45 had a mount cast into the case for this bracket:



This was from a blower that was from the original "Sebring" branded kit. My guess is that this was an early design idea that was later scrapped because it was deemed unnecessary
I have that kit - 18 years and still going. Also have the 1/4" steel support.
 

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Discussion Starter #18
Hey,

I located a z6 manifold/blower cheap. Missing everything that I planned on reproducing..

Are the z6 and y8 kit snouts the same? Would it just be a matter of getting rid of the 4 rib pulley for a 3 rib pulley to get the drive belts to line up? Or are the snouts different or something like that? Effectively, is a z6 blower with a y8 snout pulley identical to a y8 blower?
 

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Just joined this site so I could follow this thread. I have a Jackson kit I traded an old civic for. Does anyone have an exploded assembly illustration?
 
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