adjustable cam gears for ld9 - Page 2 - Performance Forum

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Re: adjustable cam gears for ld9
Thursday, December 18, 2008 9:49 PM
SO_hardcore wrote:

Taetsch Z-24 wrote:

Hmm...... guess I'm going to grab a OE 1.9 gear and see how doable this is.....



Chris


i have one im my basement from my brothers 1.9 if you need measurements and such...


Any chance you can send it to Chris so he can test this theory for us?

Re: adjustable cam gears for ld9
Friday, December 19, 2008 8:01 AM
Listening.


Misnblu.com
Newbie member since 1999
Thank you Dave and JBO!





Re: adjustable cam gears for ld9
Friday, December 19, 2008 8:33 AM
I see if I have an extra or two at the mothers.



Re: adjustable cam gears for ld9
Saturday, December 20, 2008 10:30 PM
bump
Re: adjustable cam gears for ld9
Sunday, December 21, 2008 6:46 PM
Re: adjustable cam gears for ld9
Monday, December 22, 2008 6:59 PM
Send it to me?


Chris




'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

Re: adjustable cam gears for ld9
Saturday, December 27, 2008 3:57 PM
Taetsch Z-24 wrote:

Send it to me?


Chris

any luck on getting hold of the cam gear?
Re: adjustable cam gears for ld9
Sunday, December 28, 2008 9:51 AM
Re: adjustable cam gears for ld9
Sunday, December 28, 2008 10:48 AM
It may not effect me any, but I like seeing this kind of custom work done, if not, at least attempted.





Re: adjustable cam gears for ld9
Sunday, December 28, 2008 5:31 PM
Boucher Chevrolet ATTN Chris (Parts)
1421 E Moreland BLVD, Hwy 18
Waukesha WI 53149

( I HOPE {don't get mad.} by how the sprocket looks, that this will work with the 2.3 and not the 2.4..... although i have swapped stranger things around....)



Chris




'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

Re: adjustable cam gears for ld9
Sunday, December 28, 2008 6:01 PM
Thanks Chris for the info on the double roller setup, so what's the problem with filling the oilpan? And for the person who asked why not use the stock setup, I'm running the LG0 W41 topend (086 head, HO intake, W41 cams) setup with a turbo and those cams redline @ 7450 rpm, where the stock LD9's redline is 5800 rpm. Big difference, not to mention the stiffer valve springs the HO uses compared to the LD9.

Chris you wouldn't happen to have the timing chain housing for the double roller setup would you?

Re: adjustable cam gears for ld9
Sunday, December 28, 2008 6:08 PM
Dale Young wrote:

Thanks Chris for the info on the double roller setup, so what's the problem with filling the oilpan? And for the person who asked why not use the stock setup, I'm running the LG0 W41 topend (086 head, HO intake, W41 cams) setup with a turbo and those cams redline @ 7450 rpm, where the stock LD9's redline is 5800 rpm. Big difference, not to mention the stiffer valve springs the HO uses compared to the LD9.

Chris you wouldn't happen to have the timing chain housing for the double roller setup would you?




2.4 oil fill is on the timing chain housing, if your using the 2.3 timing chain housing on a 2.4 motor bye bye oil fill...
the 2.3 oil fill is up front and runs between the runners on the intake manifold.






Re: adjustable cam gears for ld9
Sunday, December 28, 2008 6:14 PM
^^^ and is actually a hole bored into the block right beside the oil filter location.



Are you scared of the changes coming? The answer is on the inside.
Re: adjustable cam gears for ld9
Sunday, December 28, 2008 7:27 PM
All 2.3 covers are the same. they did change gasket thickness with the chain for some reason though....


Chris




'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

Re: adjustable cam gears for ld9
Monday, December 29, 2008 8:31 AM
Dale Young wrote:

Thanks Chris for the info on the double roller setup, so what's the problem with filling the oilpan? And for the person who asked why not use the stock setup, I'm running the LG0 W41 topend (086 head, HO intake, W41 cams) setup with a turbo and those cams redline @ 7450 rpm, where the stock LD9's redline is 5800 rpm. Big difference, not to mention the stiffer valve springs the HO uses compared to the LD9.


Keep in mind that alot of the forces produced by the stiffer valves springs stay within the cams and not sent back out the chain. Meaning when a set of springs are rebounding another set is dropping on the same shaft. Yes the lobe timing matters alot but looking at the HO cams there wont be much time if any where the cam is actually at any big torque angle without another lobe actuating taking alot of the springs stored energy on the rebound to help push the next set of springs down. I really dont think there is much additional force on the timing chain, except for starting, then there is for the stock setup. And also keep in mind spring resonance, as the rpm's increase the springs become easier and easier to depress. It's not like your requiring 2x the energy input from 5800 to get to 7450. That doesn't mean that at 7450 it requires less energy than at 5800 but it does mean that the springs vs. energy applied is not a linear relationship. So the energy input difference between 5800 and 6625(mid point betwen your numbers there) is greater than the required energy input difference between 6625 and 7450.

I'm pretty sure you've heard this before and will still do the double roller setup anyway tho......but I guess this is for those people who may believe you really do need the double roller.


<table>"you have given mis information too many times on this site. <br><b>You think you are somebody</b>, but I think it shows you aren't." -John Higgins</table>
Re: adjustable cam gears for ld9
Monday, December 29, 2008 5:13 PM
the only thing i read about it that makes it "better" is that there is less friction.


Just what I read.

Chris




'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

Re: adjustable cam gears for ld9
Friday, January 02, 2009 9:12 PM
Thanks for all of the info guys, I guess for me it's a piece of mind thing, GM engineered th HO with the double roller setup for a reason, and I would guess reliability was the reason, based on the redline of the W41 cams. I would just feel better at 7450 rpm with a double roller chain and gears than a single that was designed for a 5800 rpm redline.
Re: adjustable cam gears for ld9
Friday, January 02, 2009 9:24 PM
Stock 2.4 is limited to 6540 (or at least that is where both of mine stoped) not 5800. I have reved a 2.4 with some other upgrades to 7500 and not snapped the chain.



Re: adjustable cam gears for ld9
Friday, January 02, 2009 11:08 PM
Wasn't the double roller chain just for 92' and earlier' engines? I thought ALL 92.5' and newer Quads were single roller.




I have no signiture
Re: adjustable cam gears for ld9
Friday, January 02, 2009 11:35 PM
Yeah, the single roller chain is stought enough for the HO parts and can spin to 7800RPM from what I read(members' experiences) over on the Q4Forums. But I do know that Dale is looking for no excuses and I can't blame him for doing it without looking jealous.....lol. More power to ya!



Edited 1 time(s). Last edited Friday, January 02, 2009 11:38 PM


Re: adjustable cam gears for ld9
Saturday, January 03, 2009 5:07 AM
Whalesac wrote:

Wasn't the double roller chain just for 92' and earlier' engines? I thought ALL 92.5' and newer Quads were single roller.


92.11111111155566


after first quarter 92 it was ended.

Other things changed too.... but that was the biggest.



Josh, my W41 see's 7800 all the time, with the .450 cams in it, it saw... higher.

Chris





'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08


Re: adjustable cam gears for ld9
Saturday, January 03, 2009 9:43 AM
the starter post is soo rediculous. lolll

Working on obtainting an M-Class license... ?? Hint: 2 wheels.
Re: adjustable cam gears for ld9
Saturday, January 03, 2009 2:38 PM
Toronto Cavalier wrote:

the starter post is soo rediculous. lolll



What is redicuous about it? Whats wrong with development and new ideas? You'll always be in the same place if you dont try new or different ideas.
Re: adjustable cam gears for ld9
Saturday, January 03, 2009 8:00 PM
What pistons are you using on your LD9 Dale Young? You do have a hybrid LD9 right? Valve relief or dished?


GMR has got nothing on this
Re: adjustable cam gears for ld9
Tuesday, January 06, 2009 10:11 PM
DOHC Tuner I have custom Wiesco 8.5 forged pistons with deep valve reliefs from Karo at CarCustoms, by my calculations my static cr with a stock head gasket + 086 head = 10.3:1. But with the .074 cometic head gasket it should be about 9.3:1 with plenty of valve clearance, also I will look into the single roller timing chain setup as it may be easier to make work with the stock tensioner setup.
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