Camshaft interchange

[Campbell]

I have been looking for specs on vw cams and really have been able to find anything. Question is: are the hydraulic cams interchangable? I know the solid lifter cams are different from the hydraulic. Would it be okay to use a cam out of a GX small valve head in a RV/PF big valve head? thanks

[Bill Miller]

Unless they're the same cam, no. See the update/backdate and 'complete assembly' rules.

And yes, you can't swap a solid lifter cam w/ a hydraulic lifter one. As a question, where did you get those codes (GX, RV, etc.) from? I've been a VW guy a long time, and I've never seen those codes.

------------------
MARRS #25 ITB Rabbit GTI

[Campbell]

Bill,

Every different VW engine configuration has its own code, i.e. for 1.8L: the JH (as you know) is a solid lifter, big valve, 8.5 comp, CIS engine. The GX is a hydr lifter, small valve, 9.0 comp, CIS/CIS E engine and the RV/PF are hydr lifter, big valve, 10.0 comp, Digifant engines.

The big valve, hydr lifter heads were used on the Golf GTI's and I wasn't thinking in terms of updating/backdating but whether, technically, the cams between the different valve style hydraulic heads were interchangable or were they even the same cam..

I have a spread sheets that details the different engine codes and tranny codes that I would be glad to email to you if you are interested. Just let me know your email.

thanks

[Bill Miller]

Yeah, I guess I've spent too many years in the A1 GTI. I thought the A2 1.8 big-valve, high-comp engines were RD and HT???

And by all means, please send me the list.

[email protected]


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MARRS #25 ITB Rabbit GTI

[Knestis]

Originally posted by Campbell:
I have a spread sheets that details the different engine codes and tranny codes that I would be glad to email to you if you are interested.

Could I get in on this deal? Sounds like a potentially useful addition to the library!

Kirk ([email protected])

[Scirocco#28]

Hope you don't mind, Can I get a copy of that too?

[email protected]

Thanks
Steve

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88 ITB Scirocco
www.geocities.com/highspeedconnectionracing

[GTI Cup]

Kindly send me the list as well, please.

[email protected]

------------------
Glenn
MARRS ITB #07

[Knestis]

Public thanks for a cool resource!
Kirk

[machschnell]

Please send it to me too.

[email protected]

PJ

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83 Rabbit GTI - future ITB

[Bill Miller]

Sounds like this would be a great thing to put in an archive somewhere. Maybe that's another good suggestion for this place, a section w/ tech articles, how-to's, and other such goodies.

Oh webmaster, are you there????

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MARRS #25 ITB Rabbit GTI

[imported_Webmaster]

Hey, you're the one in charge of the VW archives, remember?


------------------
Webmaster - www.ImprovedTouring.com

[Bildon]

VW Engine Codes:

<table border="1" cellspacing="0" cellpadding="0">

<tr><td>Engine Code</td><td>Bore (mm)</td><td>Stroke (mm)</td><td>Displacement (cc)</td><td>Compression Ratio</td><td>Horsepower (SAE net @ rpm)</td><td>Torque (lbs-ft @ rpm)</td><td>Fuel System</td><td>Application Notes</td></tr>

<tr><td>2H</td><td>81.00</td><td>86.40</td><td>1781</td><td>10.0 : 1</td><td>94.0 @ 5400</td><td>100.0 @ 3000</td><td>Digifant</td><td>From 1990</td></tr>

<tr><td>9A</td><td>82.50</td><td>92.80</td><td>1984</td><td>10.0 : 1</td><td>134.0 @ 5800</td><td>133.0 @ 4400</td><td>CIS-E Motronic</td><td>16 valve</td></tr>

<tr><td>EE</td><td>79.50</td><td>80.00</td><td>1588</td><td>8.0 : 1</td><td>78.0 @ 5500</td><td>83.0 @ 3200</td><td>CIS</td><td></td></tr>

<tr><td>EF</td><td>79.50</td><td>80.00</td><td>1588</td><td>8.0 : 1</td><td>78.0 @ 5500</td><td>83.0 @ 3200</td><td>CIS</td><td></td></tr>

<tr><td>EH</td><td>79.50</td><td>73.40</td><td>1457</td><td>8.0 : 1</td><td>71.0 @ 5800</td><td>73.0 @ 3500</td><td>CIS</td><td></td></tr>

<tr><td>EJ</td><td>79.50</td><td>80.00</td><td>1588</td><td>8.0 : 1</td><td>78.0 @ 5500</td><td>83.0 @ 3200</td><td>CIS</td><td></td></tr>

<tr><td>EN</td><td>79.50</td><td>86.40</td><td>1715</td><td>8.2 : 1</td><td>74.0</td><td>89.6 @ 3000</td><td>CIS</td><td></td></tr>

<tr><td>FC</td><td>76.50</td><td>80.00</td><td>1471</td><td>8.2 : 1</td><td>71.0 @ 5800</td><td>80.0 @ 3500</td><td>Carburetor</td><td></td></tr>

<tr><td>FG</td><td>76.50</td><td>80.00</td><td>1471</td><td>8.2 : 1</td><td>71.0 @ 5800</td><td>80.0 @ 3500</td><td>Carburetor</td><td></td></tr>

<tr><td>FN</td><td>79.50</td><td>80.00</td><td>1588</td><td>8.0 : 1</td><td>71.0 @ 5600</td><td>82.0 @ 3000</td><td>Carburetor</td><td></td></tr>

<tr><td>FX</td><td>79.50</td><td>73.40</td><td>1457</td><td>8.0 : 1</td><td>62.0</td><td>76.6 @ 3200</td><td>Carburetor</td><td></td></tr>

<tr><td>GX</td><td>81.00</td><td>86.40</td><td>1781</td><td>9.0 : 1</td><td>85.0 @ 5250</td><td>96.0 @ 3000</td><td>CIS / CIS-E</td><td></td></tr>

<tr><td>HT</td><td>81.00</td><td>86.40</td><td>1781</td><td>10.0 : 1</td><td>100.0 @ 5500</td><td>105.0 @ 3000</td><td>CIS-E</td><td>GTI, Jetta GLI (1985)</td></tr>

<tr><td>JH</td><td>81.00</td><td>86.40</td><td>1780</td><td>8.5 : 1</td><td>94.0 @ 5500</td><td>105.0 @ 3000</td><td>CIS</td><td></td></tr>

<tr><td>ME</td><td>76.50</td><td>86.40</td><td>1588</td><td>23.0 : 1</td><td>52.0 @ 4800</td><td>71.0 @ 2500</td><td>Diesel</td><td>Diesel Engine</td></tr>

<tr><td>MF</td><td>76.50</td><td>86.40</td><td>1588</td><td>23.0 : 1</td><td>68.0 @ 4500</td><td>98.0 @ 2500</td><td>Diesel</td><td>Turbo Diesel Engine</td></tr>

<tr><td>MZ</td><td>81.00</td><td>86.40</td><td>1781</td><td>9.0 : 1</td><td>90.0 @ 5500</td><td>98.0 @ 3250</td><td>CIS</td><td>Canada Only</td></tr>

<tr><td>PF</td><td>81.00</td><td>86.40</td><td>1781</td><td>10.0 : 1</td><td>105.0 @ 5400</td><td>114.0 @ 3800</td><td>Digifant II</td><td></td></tr>

<tr><td>PL</td><td>81.00</td><td>86.40</td><td>1781</td><td>10.0 : 1</td><td>123.0 @ 5800</td><td>120.0 @ 3200</td><td>CIS-E</td><td>Scirocco 16 valve</td></tr>

<tr><td>RD</td><td>81.00</td><td>86.40</td><td>1781</td><td>10.0 : 1</td><td>102.0 @ 5250</td><td>110.0 @ 3000</td><td>CIS-E</td><td>GTI, Jetta GLI</td></tr>

<tr><td>RV</td><td>81.00</td><td>86.40</td><td>1781</td><td>10.0 : 1</td><td>100.0 @ 5400</td><td>109.0 @ 3800</td><td>Digifant II</td><td></td></tr>

</table>

[Bildon]

VW Gear Ratios</FONT>

<font size=-1>Codes located at bottom of Bell Housing</FONT>

<table border="1" cellspacing="0" cellpadding="0">
<TR>
<TD WIDTH="180"><font size=-1>
Tranny Code


FN, 4T, FF, FO

7D

IS

FK

2H

4K

9A,ACM,ACN

ASF,AON,ACH

AGS,AOP

ABG,2Y

ACD,AEN

AUG

AWY

AMC,CHE

ATH

APW

AVX

GC

</font>
</TD>
<TD WIDTH="40"><font size=-1>
final
drive

3.89

3.94

3.94

3.89

3.94

3.89

3.67

3.67

3.94

3.67

3.67

3.67

3.67

3.67

3.67

3.67

4.25

3.90


</TD>
<TD WIDTH="40"><font size=-1>
1st


3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45

3.45


</TD>
<TD WIDTH="40"><font size=-1>
2nd


1.94

1.94

1.94

2.12

2.12

2.12

2.12

1.97

1.94

2.12

2.12

1.94

1.94

1.94

1.94

1.75

1.94

1.94


</TD>
<TD WIDTH="40"><font size=-1>
3rd


1.29

1.25

1.25

1.44

1.44

1.44

1.44

1.37

1.37

1.44

1.44

1.44

1.44

1.29

1.29

1.37

1.29

1.37


</TD>
<TD WIDTH="40"><font size=-1>
4th


.91

.91

.91

1.13

1.13

1.13

1.13

1.03

1.03

1.13

1.13

1.13

1.13

.97

.91

.97

.91

.97


</TD>
<TD WIDTH="20"><font size=-1>
5th


.71

.71

.75

.91

.91

.89

.89

.75

.75

.91

.89

.89

.89

.80

.75

.85

.75




</TD>
</tr>
</table>