Hi,
I am looking at getting one the those VW of mexico brand new engine for my '67. These engines use hydraulic lifters in them and I would like to fit
1.25 ratio rockers to it as well as a set of dual carbs and a phat fat exhaust. I already have the carbs and exhaust. Can ratio rockers be fitted to
a engine that has the Hydraulic lifters??
Cheers
Ian.
yep why not
the tappet gap is the only thing that the Hydraulics are used for and once its set it dosent move so the rocker at the end wont matter what ratio
it is
The following is taken from here
http://www.aircooled.net/gnrlsite/resource/articles/mods.htm
"e recommend 1.4 rockers (which DO work on stock engines). 1.25 rockers give you almost no gain for your work; waste of effort. 1.25's work well
with some high performance cam shafts but you have to know what you're doing! 1.4's will really wake up a stock engine, especially if it's a dual
port, and if you have additional carburetion"
ok...i have k dogs on a stock, (i think) DP1600 you reckon 1.4 ratio is the go? opens her up....so to speak!
your talking $400 for rockers plus new push rods and setting up the geometry.
Not cheap but makes a difference
geometry?
Hi
I had 1.4s on my old Wasserboxer, I bent some pushrods and for a short time I went back to stock rockers, it was like driving with only 3/4 throttle,
go the 1.4s.
Steve
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with 1.4s you will have to pull the heads off the engine and machine the valve guides down so the springs dont bind as well
1.4's seem to much work. How does a hydraulic lifter work anyway? I know how a solid lifter works.
What is involved with the swap? do you buy 1.25's already on a arm and you swap them or do you just get the rockers and have to set the arm up
yourself?
I reckon you are going to do the geometry for 1.25's as well.
If you are going - go 1.4's
You buy the whole rocker complete - but it is the rods that are the hard part
you need new push rods cut to the correct length according to the way the rocker travels through its arc against the valve stem
Its something you need someone who has done the job before set up also you need to look at the rocker against the valve n nake sure it dosent bind
anywhere