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First question I recently had issues with some bushing lifters and got trash in my bearings.so I ordered a new rod and new bearings.one of my rod bearing got hot but did not turn the bearing .my ? is the new rod is 5 grams lighter than the rest.do I need to rebalance the rest of the rods or would you run it.
2nd ? I’m running pac 1237x Valve springs with llsr cam with 700 lift .they are rated @ 200 @ 1.800 seat and 585 @ 1.100 do you think that’s to much spring pressure for the street..
i,m think about setting them 1.850 @ seat =175 and 1.150 would be 565 @700 lift. is that still to much pressure for the street.
my valve train consist of crower shaft system and hollow stem valves stainless steel valve =Heavy 2.250/1.615 valves (I never turn it no more than 7000rpm)
do you think the valve springs is a overkill? thanks
That's a lot of spring pressure, especially on the seat. I'd call the cam manf and get an opinion before going forward. Running an LLSR on the street is not new, but lifter/spring choice is critical. I am planning, eventually, to do the same. Very few on this forum can answer your question, maybe try Yellowbullet or Speedtalk. What lifters were you running when it took a dump?
First question I recently had issues with some bushing lifters and got trash in my bearings.so I ordered a new rod and new bearings.one of my rod bearing got hot but did not turn the bearing .my ? is the new rod is 5 grams lighter than the rest.do I need to rebalance the rest of the rods or would you run it.
2nd ? I’m running pac 1237x Valve springs with llsr cam with 700 lift .they are rated @ 200 @ 1.800 seat and 585 @ 1.100 do you think that’s to much spring pressure for the street..
i,m think about setting them 1.850 @ seat =175 and 1.150 would be 565 @700 lift. is that still to much pressure for the street.
my valve train consist of crower shaft system and hollow stem valves stainless steel valve =Heavy 2.250/1.615 valves (I never turn it no more than 7000rpm)
do you think the valve springs is a overkill? thanks
1st thing is when purchasing a cam it should be known what's the recommended springs for reference if 1 is not wanting to use a particular brand for example....such as Pac springs and wanting to use PSI.
Call Steven or Booby at the LLSR shop also ask about recommendations on lifters 😉
Im running pac 1209x 160lb seat 510lb open..... llsr cam .720 lift....... YT rockers, hollow stem stainless valves 2.205/ 1.615.... lots of miles, no float,rev limiter set at 7400rpm and i bounce it off tht regular... all good until a spring broke.... im using crower lifters, needle bearing, i have 2 sets so no down time when i get a set rebuilt
.. Id strongly suggest changing springs once a yr, i will be
Im running pac 1209x 160lb seat 510lb open..... llsr cam .720 lift....... YT rockers, hollow stem stainless valves 2.205/ 1.615.... lots of miles, no float,rev limiter set at 7400rpm and i bounce it off tht regular... all good until a spring broke.... im using crower lifters, needle bearing, i have 2 sets so no down time when i get a set rebuilt
.. Id strongly suggest changing springs once a yr, i will be
I’m running the same springs as Mickey, with same…ish lift on a solid roller. Street car. Needle bearing lifters with axle oiling. Same heads as Mickey with stainless steel intakes that weigh 98 grams. My limiter is set at 7800 and I’ve hit it many times. YT rockers also. I feel like you might have too much spring personally. Rule of thumb is to run the lightest spring you can get away with, while keeping valves under control.
What happened to your bushing lifters, that caused the issues?
Thank you guys for the input. I think that’s Cam Motion recommend the pac 1209x kit. But we’re my valve train is a little heavier than your guys (YT and 2.205 intake valves ) were I have 2.250 intake valves and a crower shaft system and tool steel retainers.anyway my thoughts was I might need a little more spring pressure? I’m running the same cam grind as Mickeyinks
the lifters were morel 6177 i bought them July of last year and morel discontinue them in October.
i sended them back to morel and they rebuilded them with needle bearings.but new cam and new bearings and head gasket cost money @ 70 this is no fun anymore . but I’ve got good at it . I can pull my motor in 1 day by myself a C6 vette ask double 06
and as far as what happened to the lifters in don’t know. the engine held 35 lbs of oil pressure @ 210 oil temperature @ idle 1,100 rpm 60 @ 6,500 Melling 10296 standard spring (this engine was pre oil with a pressure tank and spun with the spark plugs out before starting)it was a new rebuild
it was pushing roller up into lifter every time I adjusted valves (which was about 15 times in 1,200 miles)I was getting slack in the valve train.and to be honest with you when you pay 1,100 for a set lifters you would think they would take 585 lbs of spring pressure.
and the cam core is 8620 core destroyed.
got my lifters back today here the note they sended me.when is 35lbs@210 temperature @1,100rpm and 60 lbs 6,500 not enough oil pressure for a solid roller lifters?
and with a RHS block the oil pressure sensor is last in line after the lifters.
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