ZUKIWORLD Online | Suzuki 4x4 Editorial and Forum
ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: HUMZUKI on February 03, 2005, 05:54:11 AM
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Alright,,,,,,To make a long story short.
Long story---
http://www.zukiworld.com/
Short story---
I though my cam/crank timing was off b/c I had NO power. But I checked and it was on spec. So I desided to retard the Cam timing i tooth of the timing belt.
Now,,,,,,That was an impressive improvment,but,,,,still not quite what I had. So I figure the plugs are screwd. Nope but I changed them anyway. No better. Then Im thinkin,,,,,WTF is the air filter cloged.
THEN IT DAWNS ON ME!!!!! :o :o :o
O'CRAP!!! When it snowed two weeks ago I noticed my snorkle was filling with snow so I PUT A RAG IN IT, and forgot about it when I started it later to play in the snow. [burried]
I actually thought to my self " Hm,,,,I guess the rag fell out" What an A$$.
Any way I pulled the 3'x2' constriction from my snokle and whent for a ride.
A VERY, FAST RIDE!!!! Now this thing is pulling HARD!!!! It feels WAY better than It EVER HAS!!!! Every thing is set up exactly like I had it when it was before ASIDE from the cam. It is deffinatly off a tooth! I know about every 5deg you off set it you change your "powerban" by about 200 rpm but, $hit man Whats up?!?! Im trying to find some one that sells an adjustable cam sproket but I think Rotational Dynamics whent under, so RR and RG don't have'em any more.
Any one know were I can gat one? I really want to mess around with this now. Huge Improvement!!!!!
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1.6 16v Vernier gears http://www.suzisport.com/shop/PerformanceVitarazpSidekickzpEscudo_zpGeo_1zo6_EFI.html
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LOL,,,,No thanks bro. I almost forgot about that place. THERE just a tad over priced,,,,eh? :o
$350 for a 3" bodylift
Stage 1 cam,,,,$895
Plug wires,,,,$115
Rear disk kit bare $495
$125 Hi Lift Jack
::)
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Yeh, I know not cheap but don't forget it priced in Australian Pesos. I've actually had a look at one of these type of gears and if you had the gear you could modify a stock one to do the job quite easily.
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1 Australian Dollar = 0.770749 US Dollar ;)
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I did a similar thing to a moped years ago. It was very fast at the top end but took about 10 mins to get it started. When I realised the valve timing was out I thought that I was going to get a big power increase, instead I lost about 5mph, it would start first kick though. How is your bottom end and mid range power?
On my old race bike the cam sprocket had the holes slotted to correct the timing
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Starts 1-2 cranks,,,, No problem
LOL!!!! [censored]!!! I had a blast drivin to work today!!! Even on I95
I was basting past fools doing like 70-80.  Kinda scary but I couldn't resist. 1-3K is just a tap of the skinny now(I don't even notice it, it go's by so fast) And right at 3k UP I almost convinced my boy I put thre turbo on. SICK!!! Iv got fab a trak bar now.
Maybe There's something wack'd with my engine,,,,but I don't even know if I should even put the turbo on now.
I do have a weber, ported intake, underdrive, thorly, and a 2.5" pipe. Maybe that has somthing to do with it.
I'm trying to convince my friend to let me retard his 1.6 but he's basicly stock so I don't know if that will have the same effect. But It'll only take 30-40min,,,,I might just do it when he's not looking.  And post the aftermath.
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There was a company that made a
variable valve timing gear for the VW
1.8L engines, worked on RPM, and
would vary thru the RPM range, I
always thought it was a good idea,
this way you can be bottom end
torquey and top end revvy, problem
on the Zuke motor is the cam drives
the dizzy :(
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problem
on the Zuke motor is the cam drives
the dizzy  :(
So the timing is probably advanced too. I always thought that it might be possible to get a useful increase by swinging the timing forward a few degrees. My Vitara is supposed to run on 88+ octane or something like that (haven't got the fsm to hand) regular gas here is 95/96 Octane. Adjustable sprocket sounds good, was that done with springs and centrifugal force?
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Has anyone tried that mod on an 8V? I'm always looking for more power...and my engine has quite a few mods as well...hmmmm...time to order that underdrive pulley from RRO ;)
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So the timing is probably advanced too. I always thought that it might be possible to get a useful increase by swinging the timing forward a few degrees. My Vitara is supposed to run on 88+ octane or something like that (haven't got the fsm to hand) regular gas here is 95/96 Octane. Adjustable sprocket sounds good, was that done with springs and centrifugal force?
Ya, I was thinking about it, the way I remember it,
cam timing works opposite of ignition timing, retard
is good for top end and advance is good for bottom
end, so a cam sprocket that retards at RPM would
be good for a turbo motor, retards for reduced pre
detonation under high boost and RPM
Ya, I think it was a counter weight and spring setup,
not sure how much weight would be needed to move
a cam shaft tho, seems like it would take quite a bit
to make the cam stable at a specified RPM
Wild
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when you say 'retard' you mean that you left the belt where it was and moved the cam gear back (counter clockwise) 1 notch. i can see how this would work, but didnt this really mess with your timing? i have my timing advanced 20*, isnt that the same thing or am i off here? ???
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What we have here are two different
"timings" one is Valve Timing (cam retard)
and the other is Ignition Timing (distributor
movement)
By moving the cam back one tooth, you retard
the valve timing, but because the distributor is
also driven from the cam, it too will get some
retard of the ignition timing, in a N Asperated
engine this is not the best, but in a Turbo Engine
the retard can be good to reduce ping in the engine
Some boosted engines get a thing called boost
retard for this very purpose, Turbo Sprints had this
and I snapped one of the vacuum boost retard
cans from one at the wrecking yard for this purpose,
tho I have yet to put it in ::)
Wild
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OCC racing makes an adjustable cam sprocket as well as an underdrive pulley for Zuk 1.3, 1.6 8V and 1.6 16V engines
http://www.occracing.com/pricing.htm
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that stuff looks alot cheaper than RRO. would an under drive pulley for a 1.3 W/O A/C work on a 1.3 W/O A/C?
stu
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Ya, I was thinking about it, the way I remember it,
cam timing works opposite of ignition timing, retard
is good for top end and advance is good for bottom
end, so a cam sprocket that retards at RPM would
be good for a turbo motor, retards for reduced pre
detonation under high boost and RPM
Wild
You're probaly right, it depends which way the dizzy rotates relative to the cams. Would be good to try out a few settings on a dyno. Wish I knew of one round here.
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http://www.rocky-road.com/zukpulley.html
Have you seen these pullys???
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I had to verify my memory, and what
I thought I had read about 15 years ago.
I found several articles that were included with
variable cam sprockets, all gave this info.
"In general, advancing the cam timing increases
low-end torque and improves throttle response.
Retarding the camshaft timing will generally shift
the powerband upward, increasing top-end power."
Hope this helps
Wild
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I had to verify my memory, and what
I thought I had read about 15 years ago.
I found several articles that were included with
variable cam sprockets, all gave this info.
"In general, advancing the cam timing increases
low-end torque and improves throttle response.
Retarding the camshaft timing will generally shift
the powerband upward, increasing top-end power."
Hope this helps
Wild
Thats right but you also have to remember that on some engines too much of a shift can bring the valves into contact with the pistons on the overlap.
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Fortunately for Suzuki owners, the 1.3L, 1.6L
and the 1.6L SOHC engines are all non-interferance
(I personaly checked this on the 16V)
I don't know about the 1.8L or the V-6 engines,
but I don't think many of those guys are going to
be digging into the chain drive to modify the valve
timing
Wild
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Has anyone tried that mod on an 8V? I'm always looking for more power...and my engine has quite a few mods as well...hmmmm...time to order that underdrive pulley from RRO ;)
Thats what I have (1.6 8v). Thanks for the link,(OCC) Thats where I got my underdrive pully but I lost the link. Now I can get that adjustable cam sprocket. ;D
After I retarted the cam I think the dis. was kinda off so I pulled it and put it back in a gear tooth off so that when the roter was pointing at 1# the dis. is in the middle of its adjustability ( where its supposed to be) Before,,,to set the timing the dis. had to be way off to one side not in the middle.
Does that make sence?
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After I retarted the cam I think the dis. was kinda off so I pulled it and put it back in a gear tooth off so that when the roter was pointing at 1# the dis. is in the middle of its adjustability ( where its supposed to be) Before,,,to set the timing the dis. had to be way off to one side not in the middle.
Does that make sence?
Yes ;D