hydraulic lifters

[randall]

RB25DET, took them out today and some are compressible, some stuck, how should they behave? some orifices were blocked

hope someone can help

[The Dan]

It all depends on if some are full of oil still. Hydraulic lifters can be moved up and down unless they are packed with oil or blocked. Givem a good cleanout and test them again. Personally I would whack them all back in the engine. If they aren't noisy then leave em alone. If they are then replace the offenders.

[randall]

It all depends on if some are full of oil still. Hydraulic lifters can be moved up and down unless they are packed with oil or blocked. Givem a good cleanout and test them again. Personally I would whack them all back in the engine. If they aren't noisy then leave em alone. If they are then replace the offenders.

thanks......

[wrxhoon]

Hydrolic lifters should be bled before you reintall them .

This is how you bleed them : Imerse them in in engine oil , get a wire that will fit in the hole , push the wire in the hole then try pumping the by hand until they become tight and no more tiny air bubbles come out . at all times you must keep the totaly in oil and in upright position .

Then install them in the engine start the car and they should be quiet after about 30 seconds .

When they are fully bled it should be imposible to push then down by hand .

[randall]

Hydrolic lifters should be bled before you reintall them .

This is how you bleed them : Imerse them in in engine oil , get a wire that will fit in the hole , push the wire in the hole then try pumping the by hand until they become tight and no more tiny air bubbles come out . at all times you must keep the totaly in oil and in upright position .

Then install them in the engine start the car and they should be quiet after about 30 seconds .

When they are fully bled it should be imposible to push then down by hand .

thanks for the info, I'll go and try that first..... I got a quote for new ones and it amounts to a 1000 euro's which is approx 2000 aus$...then I'll rather convert to Tomei solids.....

[Yorik]

Tomei Solids are designed for cams of a smaller overall rolling diameter.. the Stock diameter is 32mm and the Tomei Solids are designed for a 30mm diameter camshaft, so that you don't need to reshim for the installation of the higher lift PROCAM... Look again dude.. if you change to solid lifters, you might want to consider the base diameter of your camshaft... Tolerances here are not good for 1mm of pliable crap to runa round!!!

[randall]

Tomei Solids are designed for cams of a smaller overall rolling diameter.. the Stock diameter is 32mm and the Tomei Solids are designed for a 30mm diameter camshaft, so that you don't need to reshim for the installation of the higher lift PROCAM... Look again dude.. if you change to solid lifters, you might want to consider the base diameter of your camshaft... Tolerances here are not good for 1mm of pliable crap to runa round!!!

I meant the complete tomei package (lifters,shims,springs and cams) that should cover all tolerances; shouldn't it?

[The Dan]

Find out if the RB20 DET lifters are the same. I got a full spare set in perfect nick.

You are welcome to make me an offer. I don't need them.

I kinda doubt they would be the same but you never know I guess.

[Yorik]

I meant the complete tomei package (lifters,shims,springs and cams) that should cover all tolerances; shouldn't it?

In general terms Tomei provide just about everything in their line up, you just ahve to know what to pick.. You generally don't need the solid lifters until you are long way into the Lift side of things. If you are prepared for this then go for it..

[randall]

In general terms Tomei provide just about everything in their line up, you just ahve to know what to pick.. You generally don't need the solid lifters until you are long way into the Lift side of things. If you are prepared for this then go for it..

well since I most likely have to replace them anyway and the tomei stuff will only cost me a few hundred bucks more, I'd rather go for the tomei stuff.(building the complete block for high boost anyway(pistons,rods, new bearings,upgraded oil/water pump etc) and with the tomei stuff it will also benefit from higher rpm limit and more lift)

you were right about the cam base circle, tomei lists stock as 32mm and the solid conversion is 29mm.....

anybody around here ever done this mod?

thanks.....

[Yorik]

I haven't as yet, but will be ina few months, I am planning on going for the 260deg 10.85mm lift PROCAM along with the associated guff..

[randall]

I haven't as yet, but will be ina few months, I am planning on going for the 260deg 10.85mm lift PROCAM along with the associated guff..

ok I'm interested in how it goes, also just bought an rb26 head for cheap, complete, that's also an alternative to convert to solid and up the rpm lilmit to 8200.........