355 LE Dyno tune this Friday...Guess my numbers
04-03-2008, 03:29 PM
#241
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Patriot golds will be installed at 1.775". 144# seat and 354# open. Max lift is .650".
Another interseting fact to consider on the PAC 1218's. My current install height again is 1.775". Max lift is rated at .600". I am exceeding MAX lift by ~.032" that with these springs now.
How does that factor in to the decision to try the 1218's again?
Another interseting fact to consider on the PAC 1218's. My current install height again is 1.775". Max lift is rated at .600". I am exceeding MAX lift by ~.032" that with these springs now.
How does that factor in to the decision to try the 1218's again?
Last edited by wrd1972; 04-03-2008 at 03:39 PM.
04-03-2008, 03:59 PM
#244
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Ok, looked up the springs and coil bind is 1.14 as advertised. If that's the case then why did the other guy say he changed his installed height to 1.75 and ran the car, but still with valve float? Has anyone actually taken the springs and put them in a vice to see when they reach solid state?
Last edited by ulakovic22; 04-03-2008 at 04:05 PM.
04-03-2008, 04:07 PM
#245
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Ok, looked up the springs and coil bind is 1.14 as advertised. If that's the case then why did the other guy say he changed his installed height to 1.75 and ran the car, but still with valve float? Has anyone actually taken the springs and put them in a vice to see when they reach solid state?
04-03-2008, 04:17 PM
#246
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Well I reinstalled mine from a 1.80 install height to the recommended 1.75 install height and I still have the same problems, there is an issue with the possibility of my pushrods being to long, but the geoemtry looks fine, so we shall see what happens with Bill's car and mine with this issue......I just hope its the springs.......
This is why I leave it to the professionals to figure this stuff out
04-03-2008, 04:47 PM
#247
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Again my feelings are that the Pac 1218's are on the thresh hold, they work with some and not others depending on components used and proper set up. The only mistake I made was having them at 1.775" install height which is the way they came from LE but at that the they had Comp 918's installed. The 918's busted in 20 miles do to springs defects. I then installed the PAC 1218's that LE provided and Voila the install height was 1.775" once again. I cant say for sure if I had float or not when they were rather new.
AINT NO WAY IN HELL I AM TRYING COMP 918'S AGAIN.
I am still deciding between the Patriot Golds and the extremes. I am leaning toward the Golds hoping they would be strong enough over the 1218's to do the job without producing un-needed pressure. I dont mind monitoring them or even replacing them every few years. I talked to Patriot and they said either would be fine and far supperoir to the beehives.
I also talked to several other well respected folk that suggested the same springs.
I am also leaning toward going to 1.5 ratio roller rockers to bring the lift down to the 570's to slow the valve train down and reduce the beating.
AINT NO WAY IN HELL I AM TRYING COMP 918'S AGAIN.
I am still deciding between the Patriot Golds and the extremes. I am leaning toward the Golds hoping they would be strong enough over the 1218's to do the job without producing un-needed pressure. I dont mind monitoring them or even replacing them every few years. I talked to Patriot and they said either would be fine and far supperoir to the beehives.
I also talked to several other well respected folk that suggested the same springs.
I am also leaning toward going to 1.5 ratio roller rockers to bring the lift down to the 570's to slow the valve train down and reduce the beating.
04-03-2008, 06:06 PM
#249
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04-03-2008, 06:12 PM
#250
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Well we have tapped every angle to every valve related topic in this thread but this one, so here goes.
I cant see the weight of the spring being as much a concern as a moving object like the lifter, push rod, rocker and valve. The spring does not really reciprocate in the same manner as those components. I would even tend to think that springs factor little into the equation in terms of weight. The acceleration and decel forces seem to be to me much different. The whole inertia law seems different.
Maybe I am wrong.
I cant see the weight of the spring being as much a concern as a moving object like the lifter, push rod, rocker and valve. The spring does not really reciprocate in the same manner as those components. I would even tend to think that springs factor little into the equation in terms of weight. The acceleration and decel forces seem to be to me much different. The whole inertia law seems different.
Maybe I am wrong.
04-03-2008, 06:29 PM
#252
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04-03-2008, 06:50 PM
#254
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The golds are a good bit stronger than the beehives. I want to avoid overdoing things any more than at all possible even if it costs another set. Things are overdone enough right now.
Again I can see the float in the Datamaster logs and I can check #1 cylinder's spring pressures and have the car back together in 20 minutes. If I have to check the 3-4 times a year so be it to ensure things hold up.
If the my beehives were simply just slightly under par for my combonation of components then the golds should provide the valve control I need. Thats the plan right now. The Comp 921 KIT I got for free, I might make $600.00. These spring swaps are costing me nothing but my time.
Again I can see the float in the Datamaster logs and I can check #1 cylinder's spring pressures and have the car back together in 20 minutes. If I have to check the 3-4 times a year so be it to ensure things hold up.
If the my beehives were simply just slightly under par for my combonation of components then the golds should provide the valve control I need. Thats the plan right now. The Comp 921 KIT I got for free, I might make $600.00. These spring swaps are costing me nothing but my time.
04-03-2008, 07:05 PM
#255
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re
damn speed demon If I knew your cam was going to be such a problem.... Any way it pulls to 6800 on my car.... NO tune, stock 24lb fuel system. The plugs look a little lean, but the car pulls hard. The motor has approx 400 miles as of yet I will keep a close look out on the behavior fo the motor now. Art
Last edited by 1redTA; 04-03-2008 at 07:06 PM. Reason: pulls hard