Has anyone installed one of these or one that is similar?

<img src="http://vintagebus.com/rstube/tube-3.jpg" alt=" - " />

There are more connections to the stock setup compared to the one pictured. I assume that the port used on the bypass is for the distributor ventilation hose. If you look at a stock setup, it has another tube and some kind of sensor. Can anybody explain what the 'other' connectors are used for.

Note: The one pictured is from a 3.6 transplant into an early year 911.
Thanks in advance.

 

John,

Scan the archives. I posted an article on the install I did last year.

 

Thanks Bill. I tried before I posted but no luck. I'll try again.

 

John,

You can find it on Rennlist <a href="http://forums.rennlist.com/forums/ultimatebb.php?ubb=get_topic;f=4;t=001223#000000" target="_blank">here</a> as well as on John Miles 964 website <a href="http://www.porsche964.co.uk/technical/noheater.htm" target="_blank">here</a>

 

Resistors were sourced through Radio Shack, who has since stopped carrying them, at least online. Brand doesn't matter, electrical specs do.

 

Bill,

I tracked down a company that does resistors. I could only get hold of an aluminium cased (Does this matter ?) wire wound 15W 50 Ohm resistor. They said I could also add a 15W 1 ohm and put this sequentially with the 50 ohm (haven't does this yet though). I have the temperature sensor in place in the bypass pipe already so haven't fitted the 18K 2 watt resistor - Again does this matter ?

What I find now is that with the heating control **** set to cold the fans in the front will work through all four speeds. As soon as I bring the temperature up the fans will cut out after approx 5 seconds.

Additionally, the the temperature set to cold, the demist button will work but for only 5 seconds.

Any ideas ?

David

 

Bill,

Thank you for posting the heater tube installation information. I have a 1993 RS America that I am performing this mod on.

I've purchased the tube and a plastic box, and am trying to locate the proper resistors - and can't seem to find the wirewound 51ohm/15W resistor anywhere. The "standard" specs available these days include 47ohm/25W or 50ohm/10W.

Would it be possible to please consult Adrian and/or Chris for recommendations given resistor availability?

Thank you!

Eric Stratton
PCA Potomac
(703) 934-1082
stratton@vaxcom.com

 

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica"><strong>can't seem to find the wirewound 51ohm/15W resistor anywhere. The "standard" specs available these days include 47ohm/25W or 50ohm/10W. </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Eric,

47 or 50 ohms is close enough to 51. If you were talking 25 or 75 ohms that's different. If it were me, faced with those two choices, I'd probably go with the 25W, which would have alot of excess capacity, as I don't want to worry about a melting resistor.

 

Bill,

Thank you - I had assumed that the 47ohm/25W would be the most suitable option.

I have a couple of detailed questions regarding installation. It appears that the wirewound resistor is soldered in-line on the black blower wire, correct? The small resistor is difficult to see in the photo; does it make a "short circuit" loop by just plugging into both leads of the connector?

Thanks again for your assistance - hope to see you at the track one day!

Eric
PCA Potomac

 

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica"><strong>It appears that the wirewound resistor is soldered in-line on the black blower wire, correct? The small resistor is difficult to see in the photo; does it make a "short circuit" loop by just plugging into both leads of the connector?
</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Eric,

Yes, the big wirewound resistor is soldered directly to the wires that feed the motor. The small resistor is soldered to lugs which plug into the existing socket.