+6/-6 timing

[ratrodder]

looking thru the threads on this subject, how much gain or difference from stock is seen by doing this, nothing else changed ? driving charestics(spelling), fuel milage ?, I'm getting ready to replace my timing belt and wondering if it's worth the effort, motor is a 95 lq1, thanks Lloyd

[gpchris]

If you have the cam tool then go for it, If not then i wouldnt worry about it.

[OldSkoolGP]

The difference is in mid range and top end power. You get a much nicer, flatter torque and HP curve, it doesn't affect fuel economy.

[4camv6]

looking thru the threads on this subject, how much gain or difference from stock is seen by doing this, nothing else changed ? driving charestics(spelling), fuel milage ?, I'm getting ready to replace my timing belt and wondering if it's worth the effort, motor is a 95 lq1, thanks Lloyd

if that means advancing intake cams 6 degrees, and retarding exhaust cams 6 degrees, what you are doing is closing up the lobe separation angle of the intake/exhaust events. The creates more overlap, more scavenging effect, bleeds off a little compression, and less vacuum signal at idle.

If it means the opposite (retard intake/advance exhaust), you are spreading/widening the lobe separation angle- more vacuum, less bottom end, more top end power, more rpm capability

typically the factory widens the LSA if using a lot of duration, to get some semblence of idle quality back- tight LSA makes an engine idle rough and get lousy gas mileage

[ratrodder]

if that means advancing intake cams 6 degrees, and retarding exhaust cams 6 degrees, what you are doing is closing up the lobe separation angle of the intake/exhaust events. The creates more overlap, more scavenging effect, bleeds off a little compression, and less vacuum signal at idle.

If it means the opposite (retard intake/advance exhaust), you are spreading/widening the lobe separation angle- more vacuum, less bottom end, more top end power, more rpm capability

typically the factory widens the LSA if using a lot of duration, to get some semblence of idle quality back- tight LSA makes an engine idle rough and get lousy gas mileage

Thank you for the reply's- (advance intake- retard exhaust)
I bought the car for a driver, dont plan on racing or dogging the car but I like performance, in your exsperince is the driveabilty noticeably different? wants to load up?, how much on mileage 17mpg down to 12mpg ? do you think it would be worth it on a driver? , basically the same questions,thanks for the feedback, Lloyd

[hok666]

Old thread I know but was wondering too

If you have the cam tool then go for it, If not then i wouldnt worry about it.

Where can I find the cam tool? walkthrough? Is it the cam tool that I have to make? Is there directions on that as well? Thanks in advance for any input...

[SappySE107]

They are no longer made.

[hok666]

They are no longer made.

Are they pretty easy to make? Anybody got a pic of one? Also us there a write up on the procedure to accomplish the +6/-6 timing?

[walterdude]

http://60degreev6.com/forum/f99/timing-t42437

Here's a thread about timing (6-6), post #6 has some pics of the tool (special) attached...
Hope this helps,
Tom...

[HayesPerformance]

I love the 6-6 timing, and yes IF you have or can perfectly make the tool, would recommend it.

Under NORMAL driving conditions, I would almost say it slightly raised my MPG. It didn't lower it, thats for sure.

[hok666]

Kool thanks guys, I will look into it when my schedule isn't so busy thanks again... I post in the other thread or this one when I do.. Ultimately im only interested in performance... I get good gas mileage anyway and only drive a few miles to work, Thanks again...

[jmgtp]

It is easy to make the cam flat tool for STOCK cam timing. To make one for 6/6 would be really hard unless you are a machinist. Best bet is to find a used adjustable tool. I thought there were rumors of a new production run made out of steel this time? I have the aluminum tool and after a half dozen uses it is wearing the slot that the arms pivot in.