Dwayne,
You only need to plug the vacuum leak created by removing the hose from the
retard pot. It can be a cap over the source vacuum fitting or a plug in the
hose. The retard pot does not need to be blocked off. Absent of vacuum, it
does nothing.
Peter
'68 TR250
on 9/17/02 8:18 PM, Dwayne Cooper at dcooper@paciolan.com wrote:
> A follow up question. To disable the vacuum retard, should you blg the retard
> on the distributor or leave it open. Does it matter and does it affect what
> and how you set the timing?
>
> Thanks,
>
> Dwayne Cooper
>
> -----Original Message-----
> From: Peter Macholdt [mailto:vze2846b@verizon.net]
> Sent: Tuesday, September 17, 2002 11:17 AM
> To: 6pack list
> Subject: Re: Advice on Carbs (follow-up)
>
>
> Corey,
>
> Don't know what year car you have but on the TR250, the retard unit screws
> onto a shaft coming from the advance unit (after it passes through the dist
> housing). It does not screw into the dist housing. The Moss diagram is not
> clear on this. The TRF catalog, at least the 250 catalog, is much clearer.
>
> As far as I can tell, the dist. housings are the same for many model years.
> The main difference is in the way the vacuum advance/retard was configured.
> On the early cars, we had both an advance and retard unit. At some point,
> the retard unit disappeared and was replaced by a knurled nut.
>
> Dick is right, I have the retard blocked off and the car still runs great.
>
> Peter
> '68 TR250
>
> on 9/17/02 9:53 AM, corey.sherman@rcn.com at corey.sherman@rcn.com wrote:
>
>> Thanks everyone for your assistance... one more thing, please.
>>
>> I tweaked the carbs for quite some time, but couldn't quite dial them in,
>> so brought the car to 'ye old garage' (nothing like going to an expert).
>> $80 later, it runs much better, but even the shop has it idling around
>> 1100. The mechanic also detected a small vacuum leak around the manifold
>> (as someone suspected). He also adjusted the timing. This has taught me
>> not to take on too much at one time - I replaced the plugs, installed a
>> Pertronix and did a carb rebuilt simultaneously.
>>
>> One disturbing outcome was he pointed out that my distributor set up is
>> incorrect! Apparently the DPO (or mechanic) screwed this up royally (Jay,
>> aren't you glad you didn't buy this TR). I had never notice this until
>> now.
>>
>> It appears that the vacuum retard is missing*. The advance works fine, but
>> the retard is suppose to have a nut and bolt adjustment (missing), and
>> screw into the housing (which is stripped).
>>
>> Any suggestions would be great appreciated (as always).
>>
>>
>> (* 560-155 Vacuum Unit, retard TR250, TR6 to CC58360)
>>
http://www.mossmotors.com/cgi-bin/db2www/mossmotors/MossUSA/Shop/ViewProduct
s>> .
>> mac/report?T=24198&ModelID=41000&PlateID=3879
>>
>>
>> corey.sherman@rcn.com
>> 1971 TR6 CC572690
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