| [ Total Views: 775 | Total Replies: 11 | Thread Id: 63566 ] |
|
|
 Ian Bugden
A.k.a.: Ian Bugden
Officially Full-On Dubber
AKA - Bugs
Posts: 248
Threads: 57
Registered: May 6th, 2003
Member Is Offline
Location: The home of Pollies, Pyro and Porno - Canberra
Theme: UltimaBB Pro Blue ( Default )
Mood: Go Hard or go Home!!!
|
| posted on July 5th, 2007 at 05:30 PM |
|
|
Ratio rockers and hydralic lifters
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
Super Administrator
Always Waiting 4 Friday
Posts: 16723
Threads: 378
Registered: August 26th, 2002
Member Is Offline
Location: Sunny Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Oval resto ongoing
|
| posted on July 5th, 2007 at 05:56 PM |
|
|
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
|
|
|
 Bizarre
Super Moderator
The artist formerly known as blue74l
Posts: 12757
Threads: 732
Registered: August 25th, 2002
Member Is Offline
Location: Abbotsford, Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on July 5th, 2007 at 08:37 PM |
|
|
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
Posts: 97
Threads: 19
Registered: March 23rd, 2007
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
| posted on July 6th, 2007 at 07:01 PM |
|
|
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
Super Moderator
The artist formerly known as blue74l
Posts: 12757
Threads: 732
Registered: August 25th, 2002
Member Is Offline
Location: Abbotsford, Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on July 6th, 2007 at 07:12 PM |
|
|
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
Posts: 97
Threads: 19
Registered: March 23rd, 2007
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
| posted on July 6th, 2007 at 07:45 PM |
|
|
geometry?
existentialism has no future
|
|
|
1303Steve
A.k.a.: Steve Carter
Scirocco Rare
Posts: 8636
Threads: 559
Registered: August 27th, 2002
Member Is Offline
Location: Sydney, NSW
Theme: UltimaBB Pro Blue ( Default )
Mood: Parrot Heading
|
| posted on July 6th, 2007 at 10:12 PM |
|
|
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
|
|
|
Bizarre
Super Moderator
The artist formerly known as blue74l
Posts: 12757
Threads: 732
Registered: August 25th, 2002
Member Is Offline
Location: Abbotsford, Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on July 7th, 2007 at 08:02 AM |
|
|
| Quote: | Originally
posted by 4tune8
geometry?
|
Read here
http://www.superbeetles.com/performance101/aug.htm
Because they move through a different arc you need to shorten your push rods toget the correct lift
Futue te ipsum!!!
|
|
|
vw54
Super Administrator
Always Waiting 4 Friday
Posts: 16723
Threads: 378
Registered: August 26th, 2002
Member Is Offline
Location: Sunny Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Oval resto ongoing
|
| posted on July 7th, 2007 at 08:08 AM |
|
|
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
|
|
|
Ian Bugden
A.k.a.: Ian Bugden
Officially Full-On Dubber
AKA - Bugs
Posts: 248
Threads: 57
Registered: May 6th, 2003
Member Is Offline
Location: The home of Pollies, Pyro and Porno - Canberra
Theme: UltimaBB Pro Blue ( Default )
Mood: Go Hard or go Home!!!
|
| posted on July 9th, 2007 at 02:33 PM |
|
|
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
Super Moderator
The artist formerly known as blue74l
Posts: 12757
Threads: 732
Registered: August 25th, 2002
Member Is Offline
Location: Abbotsford, Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on July 9th, 2007 at 02:46 PM |
|
|
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
Super Administrator
Always Waiting 4 Friday
Posts: 16723
Threads: 378
Registered: August 26th, 2002
Member Is Offline
Location: Sunny Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Oval resto ongoing
|
| posted on July 9th, 2007 at 04:55 PM |
|
|
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
|
|
|
