Gti6 & Mi16 (1.9) Cam Lifters

[JeffR 51]

Can somebody tell me if the 2 are interchangeable?

 

The '6' set have a smaller nose on the piston to suit the 6mm valve stems, but would it be possible to use an Mi16 (1.9l) set?

 

The main concern would be if the Mi ones come in contact with the valve spring retainers, and de-seat the collets due to their slightly larger piston diameter.

 

Thanks

 

PS. I have also posted this on the 306 forum but I think there is a better technical representation here.

[welshpug 1,661]

this is the only topic I could find - http://forum.205gtidrivers.com/index.php?s...l=gti6++tappets

 

maybe PeterT would know?

[JeffR 51]

Thanks welshpug for the link-good info there.

 

Pity, it's not the outcome I was after.

[petert 588]

Hi Jeff, I didn't want to rush into this one until I'd had measured each. They're identical in all the critical dimensions, except the R or RS lifters weigh significantly less. Combined this with the their lighter valves, springs and retainers, valve float will occur higher than on an Mi16.

 

RS - 48g

 

Mi16 - 64g

 

both full of oil.

 

I'd find another RS lifter.

 

edit: there is a difference in the piston height. Mi16 piston being lower, and may not have enough travel in an RS head, resulting in >zero clearance. Probably ok the other way, ie RS lifter in Mi16 head.

Edited April 1, 2008 by petert

[JeffR 51]

Hi Peter,

 

Thanks for going to the effort of weighing them.

 

I'd really like to get my hands on another 8 before fitting the cam.

 

There must be someone here who have converted to solids & would sell a set?

Edited April 1, 2008 by JeffR

[petert 588]

mmmm......I've got 15 and was looking for one!