Lifters
- Thread starter 03DRESSER
- Start date
BUBBIE
Well-Known Member
YES
I'd use gaterman 1023's or SnS...
The Motor company has Not been getting well made lifter in for some time.
The "C" are not the best and that is what is used today by them.
The older "B" lifters used earlier TC bikes (2011 and down I THINK) were the best in a bike and sold on the market. SO, WHY did they change..?????????????
signed....BUBBIE
glazier
Junior Member
Its all about corporate profit these days. If they can get the new lifters cheaper from Mexico and save some $$$$$, its better for the shareholders. Not good for the ones that buy the product. Will people stop buying HD bikes because of the inferior lifters??? Heck NO!!!!! It's just a sign of the times.
"Show me the money"
J
Jack Klarich
Guest
From 1999 - 2001, Johnson-Hylift supplied lifters to Harley-Davidson...
Johnson-Hylift designed and produced a special piston and valve body
to work across the temp ranges and varying oil psi typically encountered
on an air-cooled engine such as the Harley. Since late 2001, HD has used
Delphi brand hydraulic lifters. That's why there was a Harley p/n change
from 18538-99 to 18538-99A and now 18538-99B. However, Delphi did not
use a 0.655" hi-volume / hi-pressure plunger piston and valve body
specifically designed for Harley as found in the Johnson-Hylift lifters.
Instead, Delphi essentially used a small block Chevy lifter. The main
difference is the Delphi lifter tries to boost the hydraulic psi by decreasing
the piston diameter, but this leads to a smaller high pressure oil reservoir.
The volume is too small and allows the lifter to clatter. That may be why
so many of the late model Twin-Cam bikes are noisy. After doing some
research AMS learned these Delphi version 18538-99B lifters are made too
small to stand up to Harley's heavy valve spring pressure. The oil reservoir
inside the lifter is too small. It doesn't hold enough oil to let the lifter bleed
off under normal use and still have a cushion of compressed oil to take up
valve train slack. Note: ALL lifters bleed off during operation and even
more-so when the bikes sits, engine off.
This is what Bubbie is talking about:s
Johnson-Hylift designed and produced a special piston and valve body
to work across the temp ranges and varying oil psi typically encountered
on an air-cooled engine such as the Harley. Since late 2001, HD has used
Delphi brand hydraulic lifters. That's why there was a Harley p/n change
from 18538-99 to 18538-99A and now 18538-99B. However, Delphi did not
use a 0.655" hi-volume / hi-pressure plunger piston and valve body
specifically designed for Harley as found in the Johnson-Hylift lifters.
Instead, Delphi essentially used a small block Chevy lifter. The main
difference is the Delphi lifter tries to boost the hydraulic psi by decreasing
the piston diameter, but this leads to a smaller high pressure oil reservoir.
The volume is too small and allows the lifter to clatter. That may be why
so many of the late model Twin-Cam bikes are noisy. After doing some
research AMS learned these Delphi version 18538-99B lifters are made too
small to stand up to Harley's heavy valve spring pressure. The oil reservoir
inside the lifter is too small. It doesn't hold enough oil to let the lifter bleed
off under normal use and still have a cushion of compressed oil to take up
valve train slack. Note: ALL lifters bleed off during operation and even
more-so when the bikes sits, engine off.
This is what Bubbie is talking about:s
J
Jack Klarich
Guest
propflux01
Active Member
Jack:
So if, essentially the Johnson lifters were specially made for the twin cam , and the Delphis do not have the volume needed to quiet the clatter, would or does that make the valve trains on earlier twin cams quieter than the ones with "B " lifters? I have not seen any info that would confirm or deny this, just curious.
Tim
So if, essentially the Johnson lifters were specially made for the twin cam , and the Delphis do not have the volume needed to quiet the clatter, would or does that make the valve trains on earlier twin cams quieter than the ones with "B " lifters? I have not seen any info that would confirm or deny this, just curious.
Tim
J
Jack Klarich
Guest
That would explain alot, not to mention the fact once H D found a supplier like Delphi to obtain offshore units cheaper well I guess it made the bean counters happy. IMO HD should do their own R and D again like the old days when they had their race team. I think they went cheaper on the TC cases also in the tappet block areas compared to the EVO, this will be IMO a high wear areaJack:
So if, essentially the Johnson lifters were specially made for the twin cam , and the Delphis do not have the volume needed to quiet the clatter, would or does that make the valve trains on earlier twin cams quieter than the ones with "B " lifters? I have not seen any info that would confirm or deny this, just curious.
Tim