| [ Total Views: 1240 | Total Replies: 10 | Thread Id: 63177 ] |
|
|
 Sick68VW
Officially Full-On Dubber
Posts: 302
Threads: 122
Registered: March 13th, 2003
Member Is Offline
Location: fivedock, Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: hearing 48s
|
| posted on June 15th, 2007 at 07:12 PM |
|
|
plastic gage specs on rod journals
hey all just mocking up the bottom end and checked the rod clearence with a plastic gage but cant find the spec anywhere in my book i want to know if
they are in spec here they are
num1 .038mm
num2 .051mm
num3 .076mm
num4 .0.76mm
im not jst a bit suss about number 1 as it seems very different to the others. anyone know thanks
|
|
|
dangerous
A.k.a.: Dave Butler Muffin Man
23 Windows of Awesome
Posts: 5901
Threads: 178
Registered: January 6th, 2005
Member Is Offline
Location: Gold Coast
Theme: UltimaBB Pro Blue ( Default )
Mood: 591
|
| posted on June 16th, 2007 at 06:52 AM |
|
|
Hi Stephen,
Those sizes are within spec and wear limit.
My books say .03mm to .09mm.....BUT!
Generally you would want to have less than .075 and at least .05 for a performance application.
Numbers 2 to 4 will be fine, but number 1 is a little tight.
Plastigage is a good check, but try it again because you may have squeezed out the plastigage a bit when removing the cap.(thus indicating less than
actual clearance)
If in doubt,the number 1 rod journal or rod tunnel in case it is in error.
Good man for checking clearances, most people don't and think 'she'll be right'.
| Quote: | Originally
posted by westi
That's mad Alan.
|
|
|
|
Sick68VW
Officially Full-On Dubber
Posts: 302
Threads: 122
Registered: March 13th, 2003
Member Is Offline
Location: fivedock, Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: hearing 48s
|
| posted on June 16th, 2007 at 01:02 PM |
|
|
Thanks dave for the info i rechecked the clearence on number 1 and found it to be .076 so i am know happy and i can start to put the bottom end
together .I would rather spend the extra hour of rechecking things then more money and time if something go's wrong. Do it once do it propley thats
what i belive.:thumb
|
|
|
StephenM
Commited Dubber
Posts: 57
Threads: 7
Registered: June 8th, 2007
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
| posted on June 17th, 2007 at 06:35 PM |
|
|
Where did you learn about building engines. I'm thinking about doing a tafe course. What do you think?
|
|
|
Sick68VW
Officially Full-On Dubber
Posts: 302
Threads: 122
Registered: March 13th, 2003
Member Is Offline
Location: fivedock, Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: hearing 48s
|
| posted on June 17th, 2007 at 10:59 PM |
|
|
I use to work in a vw workshop in sydney and learnt a lot in my time and now i try and do eventhing myself. yeah it would be worth doing a course at
tafe its always good to learn new things i learn somthing new eveyday.
|
|
|
dangerous
A.k.a.: Dave Butler Muffin Man
23 Windows of Awesome
Posts: 5901
Threads: 178
Registered: January 6th, 2005
Member Is Offline
Location: Gold Coast
Theme: UltimaBB Pro Blue ( Default )
Mood: 591
|
| posted on June 18th, 2007 at 05:21 AM |
|
|
I also learn something new every day, and I got into volksies in 1983.
Wish i could learn how to understand chicks, somethings cant be learnt.
| Quote: | Originally
posted by westi
That's mad Alan.
|
|
|
|
 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 June 18th, 2007 at 07:09 AM |
|
|
| Quote: |
Wish i could learn how to understand chicks, somethings cant be learnt.
|
yep that 4 sure
|
|
|
fullnoise
Fahrvergnugen
Posts: 964
Threads: 103
Registered: September 21st, 2002
Member Is Offline
Location: Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Middle of the road.
|
| posted on June 18th, 2007 at 09:05 AM |
|
|
Plasti-gauge procedure
I tried the plasti-gauge but I couldn't do it without moving the rod and smearing the Plasti-gauge. Some tips on how to do a successful measurement
would be appreciated. Thanks
CT
esratrams
|
|
|
66deluxe
Custom Title Time!
Posts: 1593
Threads: 139
Registered: August 16th, 2005
Member Is Offline
Location: Murrumba Downs, Brisbane.
Theme: XMBX Pro Green
|
| posted on June 18th, 2007 at 12:14 PM |
|
|
| Quote: | Originally
posted by fullnoise
I tried the plasti-gauge but I couldn't do it without moving the rod and smearing the Plasti-gauge. Some tips on how to do a successful measurement
would be appreciated. Thanks
CT
|
Ct, i just lay the crank on the bench and lay the plastigage across the journal then very carefully mate the rod cap to the rod, then slowly torque
the rods first to 15 ft lbs then in increments of 5 ftlbs till i get to 25 to 30 ft lbs depends on which rods you are using. while i torque the rods i
have one hand on the crank and rod holding both still, and torque with the other hand. It takes me about 10 minutes per rod. then once both bolts are
torqued, i dissasemble slowly, and with a soft tap with a soft face hammer i pop the cap off. It takes time but worth it. i got three sizes of
plastigage from repco @ $2 a pack. Damo.
This is my Volkswagen, there are many like it, but this one is mine. Without me my Volkswagen is useless, without my Volkswagen, I am useless.
61 Karmann Ghia 2110cc type1 w Los Panchito's
66 Deluxe Beetle 2270 type 4
10 Subaru WRX Impreza
|
|
|
dangerous
A.k.a.: Dave Butler Muffin Man
23 Windows of Awesome
Posts: 5901
Threads: 178
Registered: January 6th, 2005
Member Is Offline
Location: Gold Coast
Theme: UltimaBB Pro Blue ( Default )
Mood: 591
|
| posted on June 18th, 2007 at 05:06 PM |
|
|
You have to be careful with anny tapping of the caps that it does not squash the plastigage
and give a wider reading (and therefore less clearance reading) .
When doing the check, the journal and beaing must be dry,
and the plastigage in the centre of the bearing semi-circle.
Most bearings actually have more clearance built into them as you get near the parting edge.
It is designed into the bearing as an oil wedge
to hold the bearing away from the journal in dynamic operation.
What ever method you use, try it twice to see if you can get repeatable results.
| Quote: | Originally
posted by westi
That's mad Alan.
|
|
|
|
fullnoise
Fahrvergnugen
Posts: 964
Threads: 103
Registered: September 21st, 2002
Member Is Offline
Location: Sydney
Theme: UltimaBB Pro Blue ( Default )
Mood: Middle of the road.
|
| posted on June 18th, 2007 at 06:42 PM |
|
|
Thanks for the tips guys.
I think this will take a bit of practice. At least now I know it can be done.
A weak excuse to build another engine none the less.
Regards
esratrams
|
|
|
