Awesome, nissan made an adjustable cam gear back in the day with shims you installed on the cam dowel, I never found one and I thought I'd be stuck with the oe one. Worthwhile for anyone building a sohc ka.
My volvo has adjustable cam gears from the factory. I installed a single vvt motor in my 98. Even the vvt cam i can set static then set an rpm switch to the solenoid. So not continuously variable but gives 2 static positions.
The six fasteners are more than enough to secure the hub to the sprocket. They are compatible with stock sprocket, will be no problem with different cam. If you are concerned longer fasteners can be used so that locking nuts can be installed on back side. When bolted on all dimensions are same as stock sprocket except center hub is slightly thicker than stock sprocket, some guys use a longer center fastener. Locking nuts and a longer center fastener would be only modification that you might consider if using a high lift cam.
Was wondering do I need to adjust the distributor or just leave it stock like it is ..one more question I know it’s not a race truck but do you feel a difference…because dam they are slow but good runner…just want too be able to stay with the flow on the road …..thanks again and the tensioner worked perfect
Best to leave distributor to stock setting. If the head and block have been milled this retards cam timing so adjust the cam in the advanced direction, the deeper the milling the more retarded the cam timing ends up being
@@newportbeach3621 If you line up the “0” on cam sprocket hub to the line scribed in the outer sprocket, adjustable sprocket will match stock gear exactly. You can then adjust cam timing accordingly. • Advancing cam timing (turning cam so the outer gear line moves towards the “A” on the hub) will move power band lower in the RPM range. • Retarding cam timing (turning cam so the outer gear line moves towards the “R” on the hub) will move power band higher in the RPM range. When a cylinder head or block has been decked or re surfaced stock cam timing will be retarded. So you will want to advance the timing to get it back to factory 0.
@@newportbeach3621 Yes you could hurt something if you adjust to full advance, I would take it slow at first. Do some research on the how to adjust an adjustable cam sprocket, then move forward from there. Without knowing the PTV most people will only go a couple of degrees and call it quits. Its a good idea to check your PTV (piston to valve) clearance: Depending on your engine and any work done to it in the past, it will differ from others, the tolerances created by machining, and aftermarket parts, can reduce or sometimes increase your PTV clearance. You won't know until you degree the cam. Most people adjust on a dyno to get the desired power band: Once you know PTV clearance, you'll know your left and right limits for how much you'll be able to advance or retard the cam gear, without knowing this, you could hurt something, and an adjustment too far in either direction could leave you with problems. Once on the dyno, you can advance and retard the cam to achieve the desired power band. The idea here is to shift the power band to where you need it most.
Have never had anyone give feedback that has connected these to a dynamometer. Most guys can can feel increase in power using the self adjusting ratchet tensioner in these engines.
@@eddie6968 No Problem. Best Item so far is the self adjusting tensioner. They hold the timing chain snug. A loose chain noise allows camshaft to be out of time with the crank shaft. This condition is not good for peak performance on any engine. One of the basic starting points is correct valve to piston timing.
Not to my knowledge, The Z24 cam sprocket came stock with an adjustable cam sprocket. It can be adjusted in three different positions. Back side of sprocket has three separate timing locating holes in it that fit into the pin of the cam shaft mounting plate. I am not aware of how many degrees each hole represents.
Thanks, Well said, A lot of people have had milling done on these engines & they end up losing low RPM power, with these they will be able to bring some spunk back to the lower RPM range.
@@badger_actual8249 KA24E camshaft mounting flange has a round dowel pin in them to clock camshaft sprocket on them. The round you speak of on the adjustable cam sprockets fit up to the round dowel pin for same clocking as stock cam sprockets.
The Z24 is different from the KA24E. Z24 comes stock with a double row timing chain and an adjustable cam sprocket. Stock Z24 Cam sprockets are adjusted by the use of three holes on back side of sprocket, they can be indexed to cam shaft pin in three different positions.
When I accelerate to 4 to 5 rpms I can hear my chain rattle and sometimes on a startup but I replaced the tensioner and guides and chain could the adjustable tensioner and sprocket get rid of that noise
If its the chain making the noise the self adjusting ratchet tensioner will get rid of any excess chain slack and chain noise will be eliminated. The adjustable cam sprocket can be used to bring the camshaft back to factory timing specs. if the head or block have been milled. The adjustable cam sprocket can also be used to shift the peak power band from factory specs to a different rpm, important for people who race or drift their vehicles. The adjustable cam sprocket won't do anything for chain noise. To address the noise you are hearing, make sure its not an exterior noise coming from something like a bearing in waterpump, idler pulley, alternater, or power steering pump. One thing that can cause a rattling noise in these D21s at 4 to 5 rpms is the cowl vent trim. The cowl vent/insert is held in with some plastic clips. These plastic clips over time will dry, shrink and break allowing the cowl vent trim to vibrate and rattle at specific higher rpms, sounds very similar to chain noise. You can pull the vent trim out or temporary snug them in place with some paper or cloth shims and take it for a drive so see if noise is gone.
If it is from excess chain slack the self adjusting tensioner will adjust the excess slack out of the chain and end any chain noise. The adjustable Cam sprocket won't correct excess chain slack, it corrects cam timing if the head or block have been milled. You may need to troubleshoot a little more to be certain It may not be the chain. I had rattle noise from about 3,000 to 4,000 rpms on my D21. Couldn't figure out what it was or where it was originating until I took a hose and put it up to my ear and probed around the cab while I was driving it. Sounds odd but the noise got louder when the hose was placed at he bottom of the windshield next to the dash. I discovered most of the plastic fasteners that hold the two cowl vents in were sun-baked and broke. The cowl vents were rattling and vibrating making the rattle noise. I thought it was my timing chain or something inside the engine, it was a simple fix.
Man I wish I could have you work on my 1991 Nissan hardbody timing chain rattle on start up. You are amazing. The way you do things Jim.
Thanks,
Best item so far to control start up rattle is the self adjusting ratchet tensioner.
Awesome, nissan made an adjustable cam gear back in the day with shims you installed on the cam dowel, I never found one and I thought I'd be stuck with the oe one. Worthwhile for anyone building a sohc ka.
Thanks Josh,
Some guys get by with a set of off set cam dowels.
My volvo has adjustable cam gears from the factory. I installed a single vvt motor in my 98. Even the vvt cam i can set static then set an rpm switch to the solenoid. So not continuously variable but gives 2 static positions.
Just bought my own sprocket! I’ll be making my own video when it comes in! Doing a Full KA build on my channel! THANKS!
Great, Several guys have mentioned about making an install video but haven't seen any as of yet, will be looking forward to it.
this is insane must have it
No available for a while u think they might make again?
Hell yea, advance timing
With the adjusting of advance , will it pass California emissions?
Not sure?
What happens if I install a hot cam on it too? Does it work, are they compatible or how? Tks!
The six fasteners are more than enough to secure the hub to the sprocket.
They are compatible with stock sprocket, will be no problem with different cam.
If you are concerned longer fasteners can be used so that locking nuts can be installed on back side.
When bolted on all dimensions are same as stock sprocket except center hub is slightly thicker than stock sprocket, some guys use a longer center fastener. Locking nuts and a longer center fastener would be only modification that you might consider if using a high lift cam.
Was wondering do I need to adjust the distributor or just leave it stock like it is ..one more question I know it’s not a race truck but do you feel a difference…because dam they are slow but good runner…just want too be able to stay with the flow on the road …..thanks again and the tensioner worked perfect
Best to leave distributor to stock setting.
If the head and block have been milled this retards cam timing so adjust the cam in the advanced direction, the deeper the milling the more retarded the cam timing ends up being
@@jamesmartin5370 perfect thank you.My truck is all stock just want a little bit more out of it so you want too advance it right?
@@newportbeach3621
If you line up the “0” on cam sprocket hub to the line scribed in the outer sprocket, adjustable sprocket will match stock gear exactly. You can then adjust cam timing accordingly.
• Advancing cam timing (turning cam so the outer gear line moves towards the “A” on the hub) will move power band lower in the RPM range.
• Retarding cam timing (turning cam so the outer gear line moves towards the “R” on the hub) will move power band higher in the RPM range.
When a cylinder head or block has been decked or re surfaced stock cam timing will be retarded. So you will want to advance the timing to get it back to factory 0.
@@jamesmartin5370 thanks again for responding means alot . .sorry one more question if I go full advice could I hurt anything?
@@newportbeach3621
Yes you could hurt something if you adjust to full advance, I would take it slow at first.
Do some research on the how to adjust an adjustable cam sprocket, then move forward from there.
Without knowing the PTV most people will only go a couple of degrees and call it quits.
Its a good idea to check your PTV (piston to valve) clearance: Depending on your engine and any work done to it in the past, it will differ from others, the tolerances created by machining, and aftermarket parts, can reduce or sometimes increase your PTV clearance. You won't know until you degree the cam.
Most people adjust on a dyno to get the desired power band: Once you know PTV clearance, you'll know your left and right limits for how much you'll be able to advance or retard the cam gear, without knowing this, you could hurt something, and an adjustment too far in either direction could leave you with problems. Once on the dyno, you can advance and retard the cam to achieve the desired power band. The idea here is to shift the power band to where you need it most.
So this fit on my Nissan hardbody 1994??
Yes, if it has the stock KA24E engine.
Nissan used the KA24E engine in the D21 sold in the USA from 1990 to 1997
Love the videos mr jim. How much increase in hp & tq with adjustable cam sprocket? 96 hb 75k original miles.
Have never had anyone give feedback that has connected these to a dynamometer.
Most guys can can feel increase in power using the self adjusting ratchet tensioner in these engines.
@@jamesmartin5370 thanks for the response mr Jim I appreciate your time!
@@eddie6968 No Problem.
Best Item so far is the self adjusting tensioner.
They hold the timing chain snug.
A loose chain noise allows camshaft to be out of time with the crank shaft.
This condition is not good for peak performance on any engine.
One of the basic starting points is correct valve to piston timing.
😎👍
Is the KA24e a non interference engine?
Its an interference engine, Some guys have let timing chain slack get so bad that it jumped several teeth and end up with valves hitting the pistons.
Cool video, how's it going Jim?
Its Going Great Hector,
Did you ever find a D21, or did you end up getting that 97?
Do they make these for the z24 motor
Not to my knowledge,
The Z24 cam sprocket came stock with an adjustable cam sprocket.
It can be adjusted in three different positions.
Back side of sprocket has three separate timing locating holes in it that fit into the pin of the cam shaft mounting plate.
I am not aware of how many degrees each hole represents.
This and the self-adjusting tensioner should pair like dinner and a nice wine.
Thanks,
Well said,
A lot of people have had milling done on these engines & they end up losing low RPM power, with these they will be able to bring some spunk back to the lower RPM range.
Where can I find one of those adjusting cam sprockets?
They can be found at : www.martin-industries.net/
@@Mr1jim what about the rectangle key way I noticed.its round on the adjustable cam sprocket
@@badger_actual8249 KA24E camshaft mounting flange has a round dowel pin in them to clock camshaft sprocket on them.
The round you speak of on the adjustable cam sprockets fit up to the round dowel pin for same clocking as stock cam sprockets.
Buenas noches tiene venta para México???
Enviamos a México.
Las piezas tienen el mismo precio para pedidos a México.
Is this the same as z24?
The Z24 is different from the KA24E.
Z24 comes stock with a double row timing chain and an adjustable cam sprocket.
Stock Z24 Cam sprockets are adjusted by the use of three holes on back side of sprocket, they can be indexed to cam shaft pin in three different positions.
Anything available for z24?
None available for Z24.
Good...!...
I agree, we KA24E owners have been limping along with out these for too long....
When I accelerate to 4 to 5 rpms I can hear my chain rattle and sometimes on a startup but I replaced the tensioner and guides and chain could the adjustable tensioner and sprocket get rid of that noise
If its the chain making the noise the self adjusting ratchet tensioner will get rid of any excess chain slack and chain noise will be eliminated.
The adjustable cam sprocket can be used to bring the camshaft back to factory timing specs. if the head or block have been milled.
The adjustable cam sprocket can also be used to shift the peak power band from factory specs to a different rpm, important for people who race or drift their vehicles.
The adjustable cam sprocket won't do anything for chain noise.
To address the noise you are hearing, make sure its not an exterior noise coming from something like a bearing in waterpump, idler pulley, alternater, or power steering pump.
One thing that can cause a rattling noise in these D21s at 4 to 5 rpms is the cowl vent trim.
The cowl vent/insert is held in with some plastic clips.
These plastic clips over time will dry, shrink and break allowing the cowl vent trim to vibrate and rattle at specific higher rpms, sounds very similar to chain noise.
You can pull the vent trim out or temporary snug them in place with some paper or cloth shims and take it for a drive so see if noise is gone.
@James Dean
Send me a text as a reminder and I will contact you when in stock.
If it is from excess chain slack the self adjusting tensioner will adjust the excess slack out of the chain and end any chain noise.
The adjustable Cam sprocket won't correct excess chain slack, it corrects cam timing if the head or block have been milled.
You may need to troubleshoot a little more to be certain
It may not be the chain.
I had rattle noise from about 3,000 to 4,000 rpms on my D21.
Couldn't figure out what it was or where it was originating until I took a hose and put it up to my ear and probed around the cab while I was driving it. Sounds odd but the noise got louder when the hose was placed at he bottom of the windshield next to the dash.
I discovered most of the plastic fasteners that hold the two cowl vents in were sun-baked and broke. The cowl vents were rattling and vibrating making the rattle noise. I thought it was my timing chain or something inside the engine, it was a simple fix.
Нихрена не понятно, но очень интересно!
Thank You