Author Topic: checking compression after intake cam installed on exhaust s (Read 11050 times) Tweet

maxspeed · « **on:** May 13, 2003, 07:35:00 PM »

hellllllllllllp,I recently installe an intake cam on the exhaust side...degreed them in (mint) the problem I now face if it is a problem is when I checked my compression it was 35 across the board cold.my cams are degreed in at 105 intake/105 ehxhaust could this be due to overlap?I don't think that busa's have such low compression when cold.....please someone help me with ideas......thanks..James

Steve A · « **Reply #1 on:** May 13, 2003, 08:39:00 PM »

Did you have the throttle opened???

maxspeed · « **Reply #2 on:** May 14, 2003, 05:44:00 AM »

THROTTLE BODIES ARE OFF RIGHT NOW,SO IN ALL SENCE YOU COULD SAY IT'S WIDE OPEN.......JAMES

Steve A · « **Reply #3 on:** May 14, 2003, 11:44:00 PM »

For sure, well, it shouldn't be the cam overlap to get down to 35 PSI if it is at 105/105 so unless it has no rings or valves I'd check and make sure the cams are actually set at that.
Has to be some sort of mechanical deficiency to be that low.

Have you checked your gauge on something else to make sure it is working properly???

maxspeed · « **Reply #4 on:** May 14, 2003, 06:34:00 PM »

THE BIKE WAS RUNNING MINT.......UNTIL I DECIDED TO PUT AN INTAKE CAM ON THE EXHAUST SIDE.THE INTAKE IS DEGREED @ 105 DEG ATDC,THE EXHAUST IS @ 105 BTDC IF THE CAMS WERE IN WRONG I COULD'NT ACHIEVE THESE #'S.QUESTION!!!! ARE THE CAMS FOR A 01,THE SAME FOR AN 02?.I HAVE A 02 BUT I ONLY HAVE A MANUAL FOR A 01. WHAT ALSO CONCERNS ME IS SETTING IN THE CAMS COULD I HAVE BENT A VALVE THAT EASY? I PERSONALLY DON'T THINK SO.....I WOULD HAVE HAD TO BEND THEM ALL THE SAME IN ALL THE CYLINDERS CAUSE MY COMPRESSION IS SYMETRICAL ACROSS THE BOARD........JAMES

SJJBusa · « **Reply #5 on:** May 14, 2003, 07:18:00 PM »

quote:
QUESTION!!!! ARE THE CAMS FOR A 01,THE SAME FOR AN 02?.

Cams are the same, part number has not changed.

SJJBusa

Johnnycheese · « **Reply #6 on:** May 14, 2003, 09:57:00 PM »

check your valve clearance see if you bent valves

THEMOTORHEAD · « **Reply #7 on:** May 15, 2003, 07:55:00 AM »

be sure your numbers on the exh.are not jumbled

DaveO · « **Reply #8 on:** May 15, 2003, 10:28:00 AM »

I 2nd what Johnny said.

Dave

Steve A · « **Reply #9 on:** May 15, 2003, 11:10:00 PM »

Usually the intake starts to open btdc and the exhaust opens atdc - that isn't the way you wrote it above. Are the cams set properly??

maxspeed · « **Reply #10 on:** May 15, 2003, 08:19:00 PM »

WELL THANKS FOR ALL YOUR INPUT GUYS.....I FIGURED IT OUT.......THE CAMS WERE IN BUT NOT SET RIGHT,AS I RESET THE CAMS ONE TOOTH AT A TIME MY COMPRESSION BEGAN TO RISE FIRST IT WENT UP TO 95 PSI,NEXT ADJUSTMENT WENT TO 136 PSI,FINAL ADJUSTMENT IT'S AT 172 PSI (COLD)I DEGREED MY CAMS @105.I KNOW IT'S RIGHT BECAUSE THE INTAKE CAM STARTS TO OPEN THE VALVES BEFORE TDC I CAN SEE THEM THROUGH THE INTAKE SIDE OF THE HEAD CAUSE THE T/B'S ARE OFF.......THANKS......JAMES PS.....ANY SPECIAL MAPS OUT THERE FOR JUST AN INTAKE CAM SWAP?

E-RACER · « **Reply #11 on:** May 15, 2003, 11:34:00 PM »

James,You did it yourself,Iam impressed!

I have a killer map for a pc2,you know whos bike Iam talking about,it makes good power..

Let me know..

maxspeed · « **Reply #13 on:** May 16, 2003, 05:47:00 AM »

APPARENTLY MY #'S WERE WRONG,AND FOR THE FIRST TIME I DID'NT DO TO BAD,YES I NEED PRACTICE BUT RETENTION OF INFO IS THE WORD FOR TODAY,AND I HAVE A GOOD MEMORY.......SOME PEOPLE ARE JUST BORN WITH THE KNOWLEDGE AND DON'T HAVE TO ASK QUESTIONS....FOR THEY ARE TRUELY BLESED.......THANKS FOR THE COMPLIMENT E-RACER AND I WILL BE CALLING YOU,HOPE TO SEE YOU RIDING THIS WEEKEND THE FREDDY FIXER PERADE IS ON SUNDAY MABY I'LL GO.......JAMES

maxspeed · « **Reply #15 on:** May 17, 2003, 05:39:00 PM »

something must be correct highest dyno run was 176 @ the rear wheel.........what a

learning experience.

bigabusa · « **Reply #16 on:** June 11, 2003, 03:00:00 PM »

Yngve, its Teeth not Theet! You dumb Scandinavian!

Yngve · « **Reply #17 on:** June 11, 2003, 03:17:00 PM »

Fuck of you zero point ( in europeean song contest ) loosers........

Lets see you spell teeth in Norwegian...

I give you a tenner if you can.......

Steve A · « **Reply #18 on:** June 11, 2003, 04:02:00 PM »

Yngve · « **Reply #19 on:** June 11, 2003, 04:42:00 PM »

Good try Steve but that was singular. I asked for the norwegian word for Teeth...

I have even spelled it in my last post but the meaning in English is a bit different than in Norwegian ?????????

Steve A · « **Reply #20 on:** June 11, 2003, 04:51:00 PM »

The stupid dictionary only had singular - not plural!!!!

SJJBusa · « **Reply #21 on:** June 11, 2003, 06:35:00 PM »

Tenner....

SJJBusa

Steve A · « **Reply #23 on:** June 12, 2003, 09:33:00 AM »

So how many teeth are you going to send him??????????

Yngve · « **Reply #24 on:** June 12, 2003, 10:39:00 AM »

The offer was only good for Bigabusa ( who I have met once at his shop in Silverstone, England ).

He looks to have his hands full with Hayabusa modifying.. Maybye I should go work for him... so he can see how really dumb I am...

Steve A · « **Reply #25 on:** June 12, 2003, 10:57:00 AM »

Never admit it - some people will be lulled into a false sense of security!!!

bigabusa · « **Reply #26 on:** June 22, 2003, 03:27:00 PM »

Yngve. Not only do you have to much time to spend on here but you watch the saddest of all tv programmes! Your horizontal man, your so laid back its a wander you can make the effort to get on your bike. Are all Norks' like you?

Steve A · « **Reply #28 on:** June 27, 2003, 04:47:00 PM »

It's easy to tell he is laid back, it only took him 5 days to answer the previous post!!!

Yngve · « **Reply #29 on:** June 27, 2003, 04:53:00 PM »

Been away for 7 days.
Have been in Sweden and riding for 4 days at Anderstorp raceway.

Great fun.

I will post pics later ( problaby on LABUSAS first ).

Did NOT get down ( a first for me

) and was among the 4 fastest of 95 that were there.....

News:

Author Topic: checking compression after intake cam installed on exhaust s (Read 11050 times) Tweet

THEMOTORHEAD