Guzziboys gsx400F of death

[Mekanix]

Pull the plugs out.

Look at which piston is comming up and which set of valves are moving.

The way the cams were before, you were getting a very small amount of compression. Now your getting all of it. Pull the plugs to be sure its not compression and check if its mechanical.

[guzziboy]

I have them all out it feels way too solid to be compression..
I did briefly check the valve clearance and they all are really tight like hard up against the tappet
Got to get some new feeler gauges today and check them all properly !

[Mekanix]

Could try to loosen all the valves off.and tighten down just until they touch lightly for now. But you have to turn them down quite a bit to make contact with the piston. So I think its still timing.

Could you take a pic of the #4 cylinder cam lobes when the T mark is lined up for 1-4. and make sure that piston is all the way up. Use a screw driver in the plug hole to see when its all the way up.

I'm trying to work out how everything is lined up and how the lobes are pointing.

If you line up the T mark for 2 and 3 and align the cam's for it being in the 1 and 4 position it will lock up like that.

Can you set it up for 1-4 tdc and take a few more pictures from different angles.

[guzziboy]

Okay Mr Mekanix so I had a small win today
I checked and doubled checked the timing and adjusted all the valves.. Nothing seemed to far out of adjustment which is good I guess
So I put everything back together...
I managed to even get the thing to want to start until my battery went flat

Here's a pic of cylinder 4 you can see its at TDC and it was siting perfect at the timing mark



Here's a side shot showing the ends of the cams on cylinder 4

[pete]

Aaaah Mekanix to the rescue again, he's da man!

[Mekanix]

In the pics it looks like your on tdc just before then intake stroke. I wanted to see it on the next stroke. Compression. That way you see where the notches are pointng at the end of the cam and if the #1 on the exhaust cam is pointing forward.
If the timing mark on the crank is lined up for 1-4 tdc then the cam's look to be 1-2 teeth off in the pic. On the compression stroke you can tell by the notches and by the #1 on the exhaust cam being pparalel with the front of the block.

The cams do look timed together properly but the notches should be paralel with the head if its timed with the crank. You can see the notch on the intake cam is pointing slightly up from forward.

In the pic it looks like the intake cam is 1 tooth late. And that means that the exhaust cam is late as well.

This causes the intake cam to come in later but causes the exhaust cam to stay out longer which could cause the valves to hit the piston.

[guzziboy]

yeah the notches dont quite line up do they.I must be one tooth out!

[Mekanix]

Yup. I've done that many times.
It usually happenes when you tighten down the cam. You have to advance it so that when you tighten the cam down that it rotates the cam to the right place.

[guzziboy]

Yup. I've done that many times.
It usually happenes when you tighten down the cam. You have to advance it so that when you tighten the cam down that it rotates the cam to the right place.

You hit the nail on the head right there buddy...after about six tries I finally worked that out when I placed the tensioner in too see what happens when the chain goes tight and WALLAH she lined up!
so the good news is

WE HAVE A RUNNER LADIES AND GENTS!!!!

cant get it to idle without the choke yet but im sure after some tinkering it will be sweet..the motor actually sounds pretty good once its running!

THANK YOU MR MEKANIX

[Mekanix]

Glad to hear she runs.

[guzziboy]

Never heard a sweeter sound !!
Anyone know where I can find an exhaust ?
Mines got more holes than steel !

[pete]

Oh yeah, rock on!!!!! Mekanix is one of those guys that just looks at your post and goes "I know what's wrong with that"... man I wish I could do that!

Good stuff mate, you've done it again

Now, exhaust or not we need to see/hear some video

[guzziboy]

Oh yeah, rock on!!!!! Mekanix is one of those guys that just looks at your post and goes "I know what's wrong with that"... man I wish I could do that!

Good stuff mate, you've done it again

Now, exhaust or not we need to see/hear some video

I know what a legend huh!

Valuable lesson there kids when trying to line up your cams and chain!

Crap video but u get the idea

http://www.youtube.com/watch?v=21HzAhuzG7Q&feature=youtube_gdata_player

[steve murdoch]

This is a great site.
Both of you take a bow.

[guzziboy]

having trouble getting her to idle now..cant get it to run without the choke
do you guys usually start with the air screw about 2 turns out? thats where im at...