How about this valve trane noise? Would you call it normal?
12-09-2010, 11:38 PM
#41
Race Director
Thread Starter
ok. .040" cold? the spec on #155 binding occcurs at .520, that makes .024" too much lift: Nominal Open Pressure & Height should not be exceded.. spec i found are here: check spring specs here,,,BTW just trying to help up to you now..
IIRC, the AFR spring upgrade package is "good" to .600" lift.
Last edited by GREGGPENN; 12-09-2010 at 11:41 PM.
12-10-2010, 04:43 AM
#42
Drifting
Member Since: Oct 2003
Location: CALGARY ab
Posts: 1,594
Likes: 0
Received 0 Likes
on
0 Posts
so tell us why do you have valve train noise problem?
good luck 
irrelevant spec are as :they have c-5 and c-6 now no retro fits needed.. these work right out the show room
Last edited by korvette4u; 12-10-2010 at 04:46 AM. Reason: the end
12-10-2010, 08:16 AM
#43
Race Director
Thread Starter
Patriot's and C5's....interesting attempt at a reply.
Isn't this where I should say: "Well there's another country heard from!"
BTW: In case you THINK you figured out something I don't know, look at AFR's spring page here. I'm running their 8019 set that's good to .650" lift.
Isn't this where I should say: "Well there's another country heard from!"
BTW: In case you THINK you figured out something I don't know, look at AFR's spring page here. I'm running their 8019 set that's good to .650" lift.
Last edited by GREGGPENN; 12-10-2010 at 08:33 AM. Reason: Added BTW with link
12-10-2010, 11:40 PM
#44
Drifting
Member Since: Oct 2003
Location: CALGARY ab
Posts: 1,594
Likes: 0
Received 0 Likes
on
0 Posts
Patriot's and C5's....interesting attempt at a reply.
Isn't this where I should say: "Well there's another country heard from!"
BTW: In case you THINK you figured out something I don't know, look at AFR's spring page here. I'm running their 8019 set that's good to .650" lift.
Isn't this where I should say: "Well there's another country heard from!"
BTW: In case you THINK you figured out something I don't know, look at AFR's spring page here. I'm running their 8019 set that's good to .650" lift.
thats nice ..i'm so impressed..truly YOU see that i CARE!!!
Last edited by korvette4u; 12-11-2010 at 12:21 AM.
12-12-2010, 12:49 PM
#46
Pro
Member Since: Oct 2005
Location: Charlotte NC, behind someone going 10 under the speed limit
Posts: 721
Likes: 0
Received 1 Like
on
1 Post
Greg here's a vid of my homebuilt EFI setup and top end changes, before tune. It has AFR/TPiS heads and a 228/228 flat tappet cam with Comp Ultra Pro Magnums with .528 lift(1.6). It's quiet cold, but gets like this hot. Hasn't gotten any worse, adjusted them 3/4 turn down. They're also stock 305 valve covers, and very thin steel.
Last edited by DarkBlue88; 12-12-2010 at 12:53 PM.
12-12-2010, 02:46 PM
#47
Le Mans Master
Is there a consensus of opinion here? Is it 1/4 turn ? 3/8 turn ? 1/2 turn ? 3/4 turn?
Lets hear from an expert who thinks WAY outside the box.
Tuned Port Induction Specialties (TPIS) "The Shape Of Things To Come" in their publication LT-1 HINTS & L-98 UPDATE, at page 9:
"Effect of valve lash on hydraulic camshafts"
" One of the lessons learned (competing in the 1994 and 1995 World Challenge Series) is that to achieve elevated RPM's out of these camshafts (all hydraulic camshafts - flat or roller tappet) is that you need to preload the lash at least two turns below zero and sometimes more....
....Three turns below zero is extreme for the street but two turns is not out of the question. UNDER NO CIRCUMSTANCES SET THEM AT ONE TURN OR LESS" (emphasis added). "
Any thoughts ?
Lets hear from an expert who thinks WAY outside the box.
Tuned Port Induction Specialties (TPIS) "The Shape Of Things To Come" in their publication LT-1 HINTS & L-98 UPDATE, at page 9:
"Effect of valve lash on hydraulic camshafts"
" One of the lessons learned (competing in the 1994 and 1995 World Challenge Series) is that to achieve elevated RPM's out of these camshafts (all hydraulic camshafts - flat or roller tappet) is that you need to preload the lash at least two turns below zero and sometimes more....
....Three turns below zero is extreme for the street but two turns is not out of the question. UNDER NO CIRCUMSTANCES SET THEM AT ONE TURN OR LESS" (emphasis added). "
Any thoughts ?
If you'd like you can call them too, to see if anything's changed on that. As I wrote, it as many months ago (although it was this year) that I called.
Jake
12-12-2010, 02:51 PM
#48
Le Mans Master
I have never heard of or known anyone to set the preload at more then one full turn past 0 lash.. The FSM for my 89 says 1 full turn. I don't know if this above statement would be something to try without a little more investigation.. You could do some serious damage if wrong..
.Also if 1 turn is suppose to put the plunger half way down, wouldn't 2 full turns bottom the plunger out??..God only knows what 3 turns would do...WW
.Also if 1 turn is suppose to put the plunger half way down, wouldn't 2 full turns bottom the plunger out??..God only knows what 3 turns would do...WWGM loves to change things.
Jake
12-12-2010, 02:58 PM
#49
Race Director
Is there a consensus of opinion here? Is it 1/4 turn ? 3/8 turn ? 1/2 turn ? 3/4 turn?
Lets hear from an expert who thinks WAY outside the box.
Tuned Port Induction Specialties (TPIS) "The Shape Of Things To Come" in their publication LT-1 HINTS & L-98 UPDATE, at page 9:
"Effect of valve lash on hydraulic camshafts"
" One of the lessons learned (competing in the 1994 and 1995 World Challenge Series) is that to achieve elevated RPM's out of these camshafts (all hydraulic camshafts - flat or roller tappet) is that you need to preload the lash at least two turns below zero and sometimes more....
....Three turns below zero is extreme for the street but two turns is not out of the question. UNDER NO CIRCUMSTANCES SET THEM AT ONE TURN OR LESS" (emphasis added). "
Any thoughts ?
Lets hear from an expert who thinks WAY outside the box.
Tuned Port Induction Specialties (TPIS) "The Shape Of Things To Come" in their publication LT-1 HINTS & L-98 UPDATE, at page 9:
"Effect of valve lash on hydraulic camshafts"
" One of the lessons learned (competing in the 1994 and 1995 World Challenge Series) is that to achieve elevated RPM's out of these camshafts (all hydraulic camshafts - flat or roller tappet) is that you need to preload the lash at least two turns below zero and sometimes more....
....Three turns below zero is extreme for the street but two turns is not out of the question. UNDER NO CIRCUMSTANCES SET THEM AT ONE TURN OR LESS" (emphasis added). "
Any thoughts ?
12-14-2010, 10:31 AM
#50
seems the 155#@ 1.800 is closed installed lbs/ hieght, and the compressed open height 352#@ 1.280 a difference of .520 " is your problem.. not by much ! only .068" too much to function without binding.. may need to change springs! maybe use 185#, these are good to .650"
hope this helps
hope this helps
12-14-2010, 03:33 PM
#51
if he has the Comp Cam pro true roller rockers as mentioned!! that should not be a ISSUE...
I was thinking of them hitting.. but I have the same type rockers and larger springs.. they would on most aluminum rockers
But you should Always Know or check!!!!
I was thinking of them hitting.. but I have the same type rockers and larger springs.. they would on most aluminum rockers
But you should Always Know or check!!!!
12-14-2010, 10:05 PM
#52
Race Director
Thread Starter
But then again...so is the car when I mash on the go pedal!
12-15-2010, 03:58 PM
#53
Race Director
Thread Starter
------------------------------------------------------------
On Wed, Dec 15, 2010 at 12:34 PM, Clay to Gregg....
We dont actually recommend that, it was a observation that we learned on the dyno, it is merely information. We did it when we ran World Challenge in the mid 90s. It is NOT something that I do on engines that I build. And as far as pumping up if you take up the space in the lifter by cranking it down nealry bottoming it out there is very little space for oil.. it cant pump up.
On Wed, Dec 15, 2010 at 12:16 PM, Gregg to Clay.....
Clay, why does TPiS recommending cranking lifters down vs the “conventional” ¼ turn to avoid float? Is your goal to maximize lift, flow, and power – while hoping the valves don’t float? Does the extra-tight adjustment somehow prohibit lifters from pumping up where they’d cause valve float?-----------------------------------------------------------------
Hope this clears it up for everyone. Bottom line: Don't do the 2-3 turn modification unless you're looking to convert your hydraulic to a psuedo-solid lifter cam setup -- under race conditions, with a white elephant charging toward you...during a solar eclipse.
