Adjustable push rods with hydraulic followers

[TVR Beaver]

Hi Guys.. posting here as I know a few of you have done this....

Any thoughts on the pre-load on the adjusters?.. I thought about .060"

anything to watch out for?.. holes in heads have been opened up so should be okay?...

cheers

[spend]

Less than 60! 20-60thou is the acceptable range, I'd target 30-38 thou with adjustables, which just happens to be about 1 turn

Make pushrod slack, to allow follower spring to get cup up as high as possible, screw pushrod out until everything just touches without pressing down the follower cup (sounds easy doesn't it) then add the extra turn to put preload on the follower.

Same really as trying to use the hook to measure the distance between the circlip & cup, just easier knowing the UNF thread will be 24/28 TPI (~=30 / 38 tough target).

[TVR Beaver]

I'm sure it will be a breeze.. especialy with the engine on it's stand!!

not sure my poor old back would take it if it was in the car!!

[macdeb]

spend said:

Less than 60! 20-60thou is the acceptable range, I'd target 30-38 thou with adjustables, which just happens to be about 1 turn

Make pushrod slack, to allow follower spring to get cup up as high as possible, screw pushrod out until everything just touches without pressing down the follower cup (sounds easy doesn't it) then add the extra turn to put preload on the follower.

Same really as trying to use the hook to measure the distance between the circlip & cup, just easier knowing the UNF thread will be 24/28 TPI (~=30 / 38 tough target).

This is what PH needs more of.

[Discopotatoes]

macdeb said:

spend said:

Less than 60! 20-60thou is the acceptable range, I'd target 30-38 thou with adjustables, which just happens to be about 1 turn

Make pushrod slack, to allow follower spring to get cup up as high as possible, screw pushrod out until everything just touches without pressing down the follower cup (sounds easy doesn't it) then add the extra turn to put preload on the follower.

Same really as trying to use the hook to measure the distance between the circlip & cup, just easier knowing the UNF thread will be 24/28 TPI (~=30 / 38 tough target).

This is what PH needs more of.

Agreed

[phazed]

I did mine at 30-40 thou a few weeks ago.

Engine runs nice and quiet and you know you haven't compromised by shimming an average.

[debaron]

phazed said:

I did mine at 30-40 thou a few weeks ago.

Engine runs nice and quiet and you know you haven't compromised by shimming an average.

Exactly this.

Did mine at 40 thou. Shimming is a total compromise. Adjustable pushrods are the way forward!

[TVR Beaver]

What variation did you guy's find over your valve tips?.. TVR heads don't appear to be the best for being consistant

[ybt1982]

debaron said:

phazed said:

I did mine at 30-40 thou a few weeks ago.

Engine runs nice and quiet and you know you haven't compromised by shimming an average.

Exactly this.

Did mine at 40 thou. Shimming is a total compromise. Adjustable pushrods are the way forward!

So glad I bought adjustable 'rods instead of shims

[TVR Beaver]

cheers guy's .. hope to be fitting them this weekend