Need ca18det Crank pulley asap

Discuss topics related to the CA18DE and CA18DET series engines.
bt_sr20det
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Joined: Sat Jul 26, 2008 1:45 pm
Car: 240sx

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i need a crank pulley asap i would need shipped if your to far.


boost_boy
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You are looking for a needle in a haystack! I'll check my garage to see if I have an extra one.

Dee

zmannz
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Joined: Sun Dec 12, 2004 8:20 pm
Car: 89 s13 coupe- track car
92 s13 coupe- dd

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While this topic is here anyway, I have a question. Can the factory pulley be upgraded to a lighter item or does it have a counterweight in it? I have to attach a Ford EDIS 4 missing tooth gear to mine to get timing for a Megasquirt 2, and I would just love to have a nice looking lightweight pulley while I am at it.

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slo
Posts: 182
Joined: Wed Oct 31, 2007 2:58 am
Car: S13

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I have a crank pulley for a fwd n/a ca18de if you need it. It only has two sections where ca18det ones that three. Let me know if you want it...

boost_boy
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zmannz wrote:While this topic is here anyway, I have a question. Can the factory pulley be upgraded to a lighter item or does it have a counterweight in it? I have to attach a Ford EDIS 4 missing tooth gear to mine to get timing for a Megasquirt 2, and I would just love to have a nice looking lightweight pulley while I am at it.
Remember, this pulley is dampener as well. It is balanced and has rubber impregnated in it. One of our members have one on his pulsar, so i guess it can be done. Don't really know if it's worth sacrificing looks for dependability, but again one of our members have one on his haltec controlled pulsar and you may want to look him up.

Dee

boost_boy
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boost_boy wrote:You are looking for a needle in a haystack! I'll check my garage to see if I have an extra one.

Dee
Update: I only have one RWD piece left and I prefer to keep it since they play an important part in my standalone set-ups.


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jt15833
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Car: 95' 240SX
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what will the options be for us when the crank dampeners run out? move to a solid unit and balance the rotating assembly?


boost_boy
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jt15833 wrote:what will the options be for us when the crank dampeners run out? move to a solid unit and balance the rotating assembly?
Have you guys ever thought of the CA18ET's dampeners. I don't think these dampeners were built for the short term. I have yet to have one fail on me. However, I just had one fail on my 4G63T powered 1995 Hyundai Elantra and that things is the worsein the world to change as you have completely lower the engine to get it out. I wouldn't worry about the nissan ones just yet.

Dee

zmannz
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Joined: Sun Dec 12, 2004 8:20 pm
Car: 89 s13 coupe- track car
92 s13 coupe- dd

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I was told by a machinist yesterday that I could not balance the bottom end of my ca18det without having the pulley on it. I thought you could counterweight the motor internally on the crank or with the pistons some how to eliminate the need for balancers. Right, wrong?

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dhen
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Joined: Fri Jul 04, 2008 6:27 am
Car: MGA w/ CA18DET

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Related to the original question, how hard would it be to have a machinist make a new pulley out of aluminum? I only need one section for the alternator and water pump, since I don't have power steering or AC.

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float_6969
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If you have a pully made, you'd need to have the bottom end balanced. If they know their stuff, they'll do the pully, crank, flywheel, and clutch, all as one piece.

SUPPOSEDLY the rubber part is to dampen 2nd order harmonics, but I think it's to dampen the effects of turning the AC on and off.

Lots of Nissan motors (SR and KA) have the same pulley setup and have no problem eliminating the rubber dampener.

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dhen
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Thanks. I guess it's more difficult than just bringing in the old pulley and asking them to make a new one...

Darian

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float_6969
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You could try it and see what happens?

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dhen
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float_6969 wrote:You could try it and see what happens?
True, but that's kind of an expensive experiment if it fails. I still wonder, though, if an experienced machinist couldn't make one that worked.

If it worked, though, maybe it would be cheaper to have several made and sell the extras...

Just a thought.

boost_boy
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zmannz wrote:I was told by a machinist yesterday that I could not balance the bottom end of my ca18det without having the pulley on it. I thought you could counterweight the motor internally on the crank or with the pistons some how to eliminate the need for balancers. Right, wrong?
Your machinist is both right and wrong. You can actually balance the crank without the pulley, considering your pulley is in good shape. I had mine balanced and lightened with just the lightweight flywheel and there's no ill effect in the higher rpm range.

Dee

zmannz
Posts: 349
Joined: Sun Dec 12, 2004 8:20 pm
Car: 89 s13 coupe- track car
92 s13 coupe- dd

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boost_boy wrote:Your machinist is both right and wrong. You can actually balance the crank without the pulley, considering your pulley is in good shape. I had mine balanced and lightened with just the lightweight flywheel and there's no ill effect in the higher rpm range.

Dee
This confused me a little. I want to use a lightweight aluminum pulley with one v belt spot, one gilmer tooth gear with a built-on "keeper" lip on the front and in front of that a missing tooth gear for edis 4. I can have the gear made. So, is it possible to get the rest of the stock bottom end balanced enough to still rev to say, 8000 rpm's reliably and repeatably?


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