Comp Evolution lifters

[tjs44]

Who has run the new version of their hyd roller lifters?Opinions?Tom

[racear2865]

I stopped using hyd roller liters over a year ago. I only use solid roller on hyd grind. Have yet to have a problem. I had so many damn problems and failures with hyd
reed

[tjs44]

I don’t care about that,want experience of the new Evolution lifters.Tom

[CamKing]

Do you pay for them in Dollars or Yaun ?

[tjs44]

Mike,don’t care where they are made at this time,just want to get some feedback good or bad from some hobbiest that have put them in their engines.Tom

[Walter R. Malik]

They only work "half way decent" at minimal valve spring forces.

[bob460]

Have a read of this..........might help you.

https://www.raceenginesuppliers.com/Sup ... erformance

[Geoff2]

Good article, but.....
If the diam of the new 'cartridge' is smaller [ they say the volume is smaller ], then there is more load from the valve springs trying to bleed down the oil....& cause lifter bleed down. If you tighten clearances to reduce bleed down, you also increase the risk of a small piece of debris jamming the cartridge.

[bob460]

Good article, but.....
If the diam of the new 'cartridge' is smaller [ they say the volume is smaller ], then there is more load from the valve springs trying to bleed down the oil....& cause lifter bleed down. If you tighten clearances to reduce bleed down, you also increase the risk of a small piece of debris jamming the cartridge.

Well it's done 40,000 miles in testing and 2 drag weeks running mid 8s..,..not bad I guess......for mild street car 500-700hp seems like a good option.

I guess you could say that debris about bushed lifters.....if it jams your in trouble.

[CamKing]

Good article, but.....

It's not an article. It's a paid advertisement.

[PRH]

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