Gaterman GP-1023 Lifters Long Term Wear

[FSG]

Hard to know the exact order of events

For sure, but the lifter is being held responsible regardless.   

[clawdog60]

19 pages and growing but no hard facts.

[Don D]

Hard to know the exact order of events

For sure, but the lifter is being held responsible regardless.   

More importantly I think in these high lift high spring pressure builds guys need to make the lifters a maintenance item that needs to be checked. Easy work for the insurance of not loosing a motor.

[q1svt]

If I needed to run those kinds of lifts (or over size valves), then go with lower spring rates and titanium valves... about the price of two sets of premium lifters and no need to check them over and over again.  and you get other benefits too.   

[clawdog60]

As in regards to another recent topic post, on cam lift. I considered over .6. To be excessive for a long range bagger under 110"?

[Don D]

If I needed to run those kinds of lifts (or over size valves), then go with lower spring rates and titanium valves... about the price of two sets of premium lifters and no need to check them over and over again.  and you get other benefits too.   

I have a set of custom 7mm valves coming to test. 2.1 & 1.625

[HogBag]

 I will be ordering a set of Bob Wood or S&S lifters for when I check my 1023s. My 5-6 cam and 180 springs should have given them a good work out over the last 18 to 20 k. I need to pull the filter and check for metal after reading the last couple pages.
Thanks guys 

[fattmann101]

so, why do lifters last 400,000 miles in my truck? and everyone seems to recommend replace at 25,000 in HD?

[BUBBIE]

Totally different Beast...

LOW Lift cams and Soft springs in your worn-out truck... Not the Same as in our high performance  HD's...

If your lifters out of your truck, fit your bike,,, try them... 

signed....BUBBIE

[clawdog60]

ouch

[BUBBIE]

I AIN'T Here to Sweet Talk...

Even when I'm wrong, it IS a lot of DONATED Work...

signed....BUBBIE

[clawdog60]

 

[Hilly13]

I will be ordering a set of Bob Wood or S&S lifters for when I check my 1023s. My 5-6 cam and 180 springs should have given them a good work out over the last 18 to 20 k. I need to pull the filter and check for metal after reading the last couple pages.
Thanks guys 

I pulled my 1023's for a look Brian, they look OK and are still quiet but my new regime will be regular replacement intervals as our increased lift, spring pressure and frequent high rpm's are asking much more from the components, preventative maintenance if you like 

[04 SE Deuce]

I AIN'T Here to Sweet Talk...

Even when I'm wrong, it IS a lot of DONATED Work...

signed....BUBBIE

It's ok by me if you'd like to take a break.   Rick

[HogBag]

Hilly
To be honest these 1023 have been very quite and the front exhaust lifter has been holding up very well compared to the last couple HD sets. l will pull the filter tomorrow and check the magnet for paste fingers crossed it will be good. I got slack and didn't replace the gaskets when I fitted the gatermans so as murphy dictates the engine has developed a few oil weeps. I brought the gaskets a few weeks back but will add a set of wood lifters and maybe cam chain followers depending on the filter check.
Cheers mate 

[gregfxs]

Why does the front exhaust lifter always take more of a beating?

[q1svt]

Why does the front exhaust lifter always take more of a beating?

Ideally you want a straight line from the c/l of the cam to the rocker arm... when there are different angles it creates side loading and other issues.  More angles and lift compounds the problem.

[rbabos]

Why does the front exhaust lifter always take more of a beating?

Ideally you want a straight line from the c/l of the cam to the rocker arm... when there are different angles it creates side loading and other issues.  More angles and lift compounds the problem.

At one time I checked the front and rear for alignment. I couldn't detect any real difference between the two that could cause a problem. There is a difference on how the cam lobe front exhaust interfaces with the lifter from over the center effects from the rear cam lobes. The result can be like a mini chatter effect. Minimizing this is one of the side benifits of the new Zippers tensioners as they could keep the drive between the two cams more stable.
Ron

[q1svt]

Interesting... thxs

[Don D]

19 pages and growing but no hard facts.

Yes from either side, just evidence of failures of a component that can and did cause catastrophic damage. Personally I am not ready to blame the Gatermans however the perception will remain until someone can prove otherwise. Markets are influenced by these things. Not my way but the way of the world.

Why does the front exhaust lifter always take more of a beating?

Ideally you want a straight line from the c/l of the cam to the rocker arm... when there are different angles it creates side loading and other issues.  More angles and lift compounds the problem.

True but at mid lift, due to the arc of movement the C/L changes but we are splitting hairs on this long pushrod motor.

[q1svt]

Why does the front exhaust lifter always take more of a beating?

Ideally you want a straight line from the c/l of the cam to the rocker arm... when there are different angles it creates side loading and other issues.  More angles and lift compounds the problem.

True but at mid lift, due to the arc of movement the C/L changes but we are splitting hairs on this long pushrod motor.

Agree the matter if far more complex than how I stated it... just provided a simple answer to a general question 

Not sure that the c/l of a cam ever changes... but yes the lobe profile will always create side loading of the lifter against the lifter bore.  more lift and or aggressive ramps create more.

[Don D]

It is true and downright scary to look at

[rbabos]

Why does the front exhaust lifter always take more of a beating?

Ideally you want a straight line from the c/l of the cam to the rocker arm... when there are different angles it creates side loading and other issues.  More angles and lift compounds the problem.

True but at mid lift, due to the arc of movement the C/L changes but we are splitting hairs on this long pushrod motor.

Agree the matter if far more complex than how I stated it... just provided a simple answer to a general question 

Not sure that the c/l of a cam ever changes... but yes the lobe profile will always create side loading of the lifter against the lifter bore.  more lift and or aggressive ramps create more.

Not that a lot can be done about it but I've always felt the bores and bodies are too short to provide good support, given what these things are being pushed to. Too much clearance too which is about the only thing we could have control over. Then again with inadequate support it would be short lived also.
Ron

[clawdog60]

There ya go over head cams on a tc engine, hell even just 1 cam per head still call it a twin cam,many issues solved.?

[Don D]

Larger rollers