Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: hp340nos]
#614702
02/17/10 04:34 PM
02/17/10 04:34 PM
|
Joined: Nov 2003
Posts: 6,293 Rock Springs
Bob_Coomer
master
|
master
Joined: Nov 2003
Posts: 6,293
Rock Springs
|
Whats the cam specs? I havent seen to many solid rollers want to be advanced to a 104 ICL. Unless its been ground on a 106 or something.... Do you care to post the cam specs.
[color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: Bob_Coomer]
#614703
02/17/10 04:40 PM
02/17/10 04:40 PM
|
Joined: Dec 2008
Posts: 1,200 UK
602heavy
pro stock
|
pro stock
Joined: Dec 2008
Posts: 1,200
UK
|
Quote:
Also note that every time you change the crank sprocket key way you have also changed TDC postions so TDC would need to be found again.
But remember about moving the crank keys..you gotta find the new TDC again, a bunch of people dont, its not worth the trouble of doing it then IMO.
You got me baffled here , maybe i'm missing the point somewhere (most of the time ) , but why would moving the crank sprocket loose TDC? , these multi keyed sprockets are meant to be moved around to help aid in degreeing the cam , just asking.
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: hp340nos]
#614704
02/17/10 04:42 PM
02/17/10 04:42 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
i verified tdc with piston stop then rotated cam gear 1 tooth counterclockwise 133* oops went wrong way,back through the whole process again went the other way clockwise 1 tooth from original postion came up with 147.5+66.5=214/2=107 ,i am getting close,cam is recommended to be installed at 104* i have some keyways on the cam gear i can move to try to get the other 3*,how close do you want it to be?looks like timing mark on the cam is marked 1 tooth off,marks are not inline.
Thats why I said 1 tooth and 3 degrees in the earlier post... you moved it the 1 tooth and now you need to move it 3 more degrees on the sprocket .... isnt it fun
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: earthmover]
#614706
02/17/10 04:59 PM
02/17/10 04:59 PM
|
Joined: Dec 2008
Posts: 1,200 UK
602heavy
pro stock
|
pro stock
Joined: Dec 2008
Posts: 1,200
UK
|
Quote:
so mr p. if he moved it 1 more teeth it would be where he wants it right....or do you have to use the off set keys.....
One more tooth would be wayyyyy to much , moving the crank sprocket around should get the job done.
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: earthmover]
#614707
02/17/10 04:59 PM
02/17/10 04:59 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
so mr p. if he moved it 1 more teeth it would be where he wants it right....or do you have to use the off set keys.....
No he has a sprocket that has 1, 2, or 3 degrees on it, if you move 1 tooth on the chain (sprocket) it will move it 13 degrees(might be 12)
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: MR_P_BODY]
#614708
02/17/10 06:14 PM
02/17/10 06:14 PM
|
Joined: Jan 2003
Posts: 1,365 elmira ny
hp340nos
OP
pro stock
|
OP
pro stock
Joined: Jan 2003
Posts: 1,365
elmira ny
|
the multi keys are on the cam gear not the crank gear.its a pro gear set 7 keyways on cam.mr pbody u hit it on the money,i will try the 3*advance on the cam gear and see what happens,cam is herbert billet solid roller part#ce6k, 246/254@.050 .585/.600 lift 108* lobe seperation,they recommend to install it to 104* ,they said it has 4*ground into it.motor is going into 88 dakota 3360#, motor is 418 9.6;1 compression street/strip,full ported polished x-heads flow 270@.600/172@.600,weiand x-celerator intake. 727 reverse pattern valve body,trans is ptc 4400 flash converter,3.91 gears.thanks mike
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: hp340nos]
#614709
02/17/10 09:14 PM
02/17/10 09:14 PM
|
Joined: Jan 2003
Posts: 1,365 elmira ny
hp340nos
OP
pro stock
|
OP
pro stock
Joined: Jan 2003
Posts: 1,365
elmira ny
|
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: hp340nos]
#614710
02/17/10 09:21 PM
02/17/10 09:21 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: hp340nos]
#614712
02/17/10 09:29 PM
02/17/10 09:29 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
does the 104* installed centerline seem right for this cam and my build?thanks again mike
Does to me if you need the torque(which most guys need) in a small block... specially in a stock stroke
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: MR_P_BODY]
#614713
02/17/10 09:52 PM
02/17/10 09:52 PM
|
Joined: Dec 2008
Posts: 1,200 UK
602heavy
pro stock
|
pro stock
Joined: Dec 2008
Posts: 1,200
UK
|
You say you have no cam card? These are the valve events @ .050" 4* advanced. Intake opens-- 19* BTDC Intake closes-- 47* ABDC Exhaust opens-- 59* BBDC Exhaust closes-- 15* ATDC You can varify this along with installed ICL.
Last edited by 602heavy; 02/17/10 09:57 PM.
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: hp340nos]
#614714
02/18/10 12:22 AM
02/18/10 12:22 AM
|
Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
master
|
master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
|
Quote:
does the 104* installed centerline seem right for this cam and my build?thanks again mike
Yep, with your 9.6 comp and 3400# 246*@ .050 Id want the ICL around 104* to 102* if intake valve clearence allows.
602,s Valve events are correct at a 104 ICL. How does he do that. mike
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: hp340nos]
#614716
02/18/10 09:02 AM
02/18/10 09:02 AM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
how do i go about checking the above cam measurements?will they fall into place once i get the cam at 104*icl?thanks again for any help. mike
With the degree wheel installed just like you did the cam C/L just start rotating the crank and check the points where the valve is then read the wheel... but you will need to move the dial indicator to the exhaust lobe when reading the exhaust events
These are the valve events @ .050" 4* advanced.
Intake opens-- 19* BTDC Intake closes-- 47* ABDC Exhaust opens-- 59* BBDC Exhaust closes-- 15* ATDC
You can varify this along with installed ICL.
|
|
|
Re: 1st timedegreeing cam?cam is at 120 what did i do wrong
[Re: hp340nos]
#614720
02/18/10 02:49 PM
02/18/10 02:49 PM
|
Joined: Dec 2008
Posts: 1,200 UK
602heavy
pro stock
|
pro stock
Joined: Dec 2008
Posts: 1,200
UK
|
Quote:
when checking cam events,i find tdc with piston stop,0 the degree wheel,now set-up the indicator.now do i find max lift say on the intake,then read the readings on the degree wheel?at what lift do i read the wheel?my wheel is moroso 11" marked 0-180 then 180 back to 0.
Varify TDC with piston stop & zero degree wheel ,turn motor over & zero dial indicator when #1 intake lifter is on base circle of lobe , continue to rotate motor & stop when dial indicator measures .050" lift , if you shoot past just back the crank up (.100") , read degree wheel which should show valve event @ 19.5* before top dead centre , continue to turn the motor & read off degree wheel @ full lift (103.5* ATDC)) , continue to turn motor & read off degree wheel when lifter is .050" before seated (46.5* ABDC) , if all works out you're good to go.
Sport 440 , you're too modest.
Last edited by 602heavy; 02/18/10 02:52 PM.
|
|
|
|
|