[TR] Aero Kroil

[Ted Schumacher]

Bob and list, the best solvent/bolt loosener/whateveryouwanttocallit is 
MOPAR heat riser solvent. The older 6 or straight 8 cylinder cars, say 
up to the early '60', had heat risers in the exhaust manifold. This was 
a flap type valve that was open when cold and closed , bimetallic strip, 
when the engine warmed up. This gave better cold start up running by 
heating the intake manifold.  Cold cast iron going to hot generate 
moisture which would rust the heat riser flap closed.  MOPAR heat riser 
solvent would free these up.  If the solvent didn't work, it was torch 
time.  Problem is, no longer available.  Try to find an old time 
Chrysler/Dodge/Plymouth dealer and see if they have any on a dusty back 
shelf.  Ted (who guards his very well)



Bob wrote:
> On Thursday 28 May 2009 12:24:10 pm Randall wrote:
>   
>> Bob wrote :
>>     
>>> Well my order of the 16oz Aero Kroil came by UPS today and I am going to
>>> give it a try on my 6 project engine
>>>       
>> Just curious, Bob, how did your experiment turn out?  I've tried AeroKroil
>> in the past, but it didn't seem to work any better than PBB for me.
>>
>> -- Randall
>>     
>
>
> Randall,
>
> To be honest I am not sure if it is better than PB blaster.
>
> Neither PB or AK was able to allow the broken studs to be removed from my 6 
> exhaust manifold by applying, using a propane torch and vice grips.
>
> What I ended up doing was to weld a nut on to the stub of each stud. Then I 
> used my butterfly impact wrench on low setting first then up a notch while 
> heating the manifold with a Oxy Acetelene torch and I used some wax also. 
> After moving the torque setting to about 5 the broken stud started to move.
>
>
> The 2nd one required a setting of 6 but it did come out.
>
> The wax, welding and torch were all suggested by list members if the PB 
> blaster and AK did not do the job.
>
> And I thank the list for their ideas.
>
>
> I think with this problem it was the wax, heat and the impact action of the 
> butterfly wrench that saved the day.
>
> But I did use it on all the external engine nuts, bolts etc and everything 
> came off just great.
>
> Is it better?  More testing needed I guess.
>
> But now I have 2 cans of AK and a can of PB. And with nothing to remove since 
> I just removed the last bolt from the engine a week ago and that was the last 
> one!
>
> Bob
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