1 1 1 1 1 1 1 1 1
1 1 1
1 1 1 1 1 1 1 1 1
FAQ :: Search :: Memberlist :: Usergroups :: Register
Profile :: Log in to check your private messages :: Log in

Fine tuning my IDF 40s on a Type IV engine
Goto page Previous  1, 2
 
Post new topic   Reply to topic    AthensVWClub.com Forum Index -> Tech Talk
View previous topic :: View next topic  
Author Message
Mountain Power House



Joined: 26 Jul 2006
Posts: 879
Location: Aircooled Heaven USA


PostPosted: Tue Jan 31, 2012 9:45 pm    Post subject: Reply with quote

It probably is a 1.8 engine based on those symptoms.. In that case it will like the smaller ventures a lot better.
_________________
Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4
Back to top
View user's profile Send private message Visit poster's website
Tronview
Site Admin


Joined: 29 Jun 2007
Posts: 330
Location: Bethlehem, Ga

1963 Volkswagen Beetle

PostPosted: Sat Feb 04, 2012 1:24 pm    Post subject: Reply with quote

Just did a compression test on all cylinders. Doesn't Look Good.

1: 107
2: 85
3: 120
4: 70
_________________
1963 Beetle
1975 Westfalia

Duct tape is like 'The Force.' It has a light side and a dark side, and it holds the universe together.
Back to top
View user's profile Send private message
Mountain Power House



Joined: 26 Jul 2006
Posts: 879
Location: Aircooled Heaven USA


PostPosted: Sat Feb 04, 2012 1:34 pm    Post subject: Reply with quote

See, thats why you verify mechanical integrity first, before EVER trying to tune.

That engine is incapable of being tuned, all the compression is low and the percentage of differential creates to least is way out of the effective range.
Were these numbers gathered with a warm engine? Were the throttles locked wide open?

Tear it down.
_________________
Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4


Last edited by Mountain Power House on Sat Feb 04, 2012 1:36 pm; edited 2 times in total
Back to top
View user's profile Send private message Visit poster's website
Tronview
Site Admin


Joined: 29 Jun 2007
Posts: 330
Location: Bethlehem, Ga

1963 Volkswagen Beetle

PostPosted: Sat Feb 04, 2012 1:35 pm    Post subject: Reply with quote

I agree.
_________________
1963 Beetle
1975 Westfalia

Duct tape is like 'The Force.' It has a light side and a dark side, and it holds the universe together.
Back to top
View user's profile Send private message
Clyde



Joined: 03 Jun 2006
Posts: 855
Location: Athens


PostPosted: Sun Feb 05, 2012 5:29 pm    Post subject: Reply with quote

Quote:
Were the throttles locked wide open?

_________________
'69 Bug, 1776, dual kadrons, Web 111 cam

Clyde's Aircooled
(706) 206 6327
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Mountain Power House



Joined: 26 Jul 2006
Posts: 879
Location: Aircooled Heaven USA


PostPosted: Sun Feb 05, 2012 7:26 pm    Post subject: Reply with quote

Clyde wrote:
Quote:
Were the throttles locked wide open?


If they weren't the numbers will all be low and will vary by the synchronization of the carbs/ intake characteristics.
_________________
Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4
Back to top
View user's profile Send private message Visit poster's website
Tronview
Site Admin


Joined: 29 Jun 2007
Posts: 330
Location: Bethlehem, Ga

1963 Volkswagen Beetle

PostPosted: Sun Feb 05, 2012 11:44 pm    Post subject: Reply with quote

Yep. I forgot that step. And boy do I feel stupid Embarassed. Here is the new numbers and I was able to preform a leak down test thanks to Clyde loaning me the tool.

Compression Test.
1: 130
2: 149
3: 140
4: 138

Leak Down Test. 100psi
1: 90psi
2: 97psi
3: 96psi
4: 90psi

I also changed the jetting on the carbs. Engine seems to be running smoothly. Spark plugs have a nice color. MPG is unknown at this time.

Current Dual Weber numbers:
Venturi - 28
Main Jet - 1.30
Air Correction Jet - 2.00
Emulsion Tube - F11
Pump Jet - .50
Idle Jet - .55
Starter Jet - 8of5
_________________
1963 Beetle
1975 Westfalia

Duct tape is like 'The Force.' It has a light side and a dark side, and it holds the universe together.
Back to top
View user's profile Send private message
Mountain Power House



Joined: 26 Jul 2006
Posts: 879
Location: Aircooled Heaven USA


PostPosted: Mon Feb 06, 2012 5:09 am    Post subject: Reply with quote

Big difference once the chambers can fill, huh?? Lol

Look good now! On the leakdown I expect they are holding the stated values and not leaking that amount?
_________________
Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4
Back to top
View user's profile Send private message Visit poster's website
Tronview
Site Admin


Joined: 29 Jun 2007
Posts: 330
Location: Bethlehem, Ga

1963 Volkswagen Beetle

PostPosted: Mon Feb 06, 2012 12:41 pm    Post subject: Reply with quote

Yes they are holding the stated values.
_________________
1963 Beetle
1975 Westfalia

Duct tape is like 'The Force.' It has a light side and a dark side, and it holds the universe together.
Back to top
View user's profile Send private message
Mountain Power House



Joined: 26 Jul 2006
Posts: 879
Location: Aircooled Heaven USA


PostPosted: Mon Feb 06, 2012 3:54 pm    Post subject: Reply with quote

Sounds good to me!
_________________
Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4
Back to top
View user's profile Send private message Visit poster's website
Jon
Site Admin


Joined: 01 Jun 2006
Posts: 2421
Location: Bishop GA

1969 Volkswagen Type 3

PostPosted: Tue Feb 07, 2012 11:58 pm    Post subject: Reply with quote

Mountain Power House wrote:
Clyde wrote:
Quote:
Were the throttles locked wide open?


If they weren't the numbers will all be low and will vary by the synchronization of the carbs/ intake characteristics.


This gives me hope that my current type 4 may not be so bad after all. We did not have the throttles locked open when we checked the compression. Very Happy I'll do it again this weekend. Thanks James. Wink
_________________
73 Typ481
76 Westy
73 Bug
69 Squareback
70 Fastback


63 Bug
Back to top
View user's profile Send private message Send e-mail
Mountain Power House



Joined: 26 Jul 2006
Posts: 879
Location: Aircooled Heaven USA


PostPosted: Wed Feb 08, 2012 12:01 am    Post subject: Reply with quote

Jon, Your engine made excellent RWHP on the dyno.. No issues with it, its stronger than its supposed to be! It only had 58K original miles on it when we installed it into the 481.

Unless a compression test is done warm and with the throttles @ WOT it is absolutely 100% worthless.
_________________
Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4
Back to top
View user's profile Send private message Visit poster's website
Jon
Site Admin


Joined: 01 Jun 2006
Posts: 2421
Location: Bishop GA

1969 Volkswagen Type 3

PostPosted: Wed Feb 08, 2012 12:33 am    Post subject: Reply with quote

Mountain Power House wrote:
Jon, Your engine made excellent RWHP on the dyno.. No issues with it, its stronger than its supposed to be! It only had 58K original miles on it when we installed it into the 481.

Unless a compression test is done warm and with the throttles @ WOT it is absolutely 100% worthless.


Jake, No problems with the type 4 in the Thing! The engine I was referring to was the one in my 76 Westy. I also bought a wrecked 77 Bus that was a daily driver till it hit a jeep. Now I have another type 4. Very Happy
_________________
73 Typ481
76 Westy
73 Bug
69 Squareback
70 Fastback


63 Bug
Back to top
View user's profile Send private message Send e-mail
Mountain Power House



Joined: 26 Jul 2006
Posts: 879
Location: Aircooled Heaven USA


PostPosted: Wed Feb 08, 2012 12:45 am    Post subject: Reply with quote

DUH! (I just punched myself for being a dumbass)
_________________
Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    AthensVWClub.com Forum Index -> Tech Talk All times are GMT - 4 Hours
Goto page Previous  1, 2
Page 2 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



AthensVWClub.com