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Ratio rockers and hydralic lifters

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Ian Bugden AKA - Bugs

248 posts · joined May 2003 ·

#600435
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.
A good friend will come and bail you out of jail.....
But a true friend will be sitting next to you saying "Damm that was fun!!!"

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#600443
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
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 ·

#600474
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"
Futue te ipsum!!!

4tune8 Slammed & Awesome Dubber

97 posts · joined Mar 2007 ·

#600620
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!
existentialism has no future

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 ·

#600623
your talking $400 for rockers plus new push rods and setting up the geometry.

Not cheap but makes a difference
Futue te ipsum!!!

4tune8 Slammed & Awesome Dubber

97 posts · joined Mar 2007 ·

#600627
geometry?
existentialism has no future

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#600657
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

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#600699
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
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

Ian Bugden AKA - Bugs

248 posts · joined May 2003 ·

#601055
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?
A good friend will come and bail you out of jail.....
But a true friend will be sitting next to you saying "Damm that was fun!!!"

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 ·

#601056
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
Futue te ipsum!!!

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#601073
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
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409