[TR] Spitfire head gasket
Roger Elliott
elliottr at rmi.net
Tue Apr 4 16:45:42 MDT 2017
LOL. I guess it is me that should be retired.
Roger
On 04/04/2017 08:27 AM, David Friedlander wrote:
> AARP bolts? Maybe they're took old to work and have retired! LOL!
>
> Dave
>
> On Apr 4, 2017 1:36 AM, "Roger Elliott" <elliottr at rmi.net
> <mailto:elliottr at rmi.net>> wrote:
>
> The shop did the head rebuild and install both times, so I am not
> sure if they followed the correct procedures. It has AARP studs.
> They were new when they rebuilt the head the first time and have
> not been replaced.
>
> The first time they rebuilt the head, the head gasket blew at 800
> miles. (It had been retorqued). I replaced the head gasket that
> time as I didn't want to wait to get it in. I used a better head
> gasket, discovered the timing was way too far advanced, I figured
> that was why the head gasket blew. I followed the manual for
> tightening specs and order. Actually I used the AARP specs for
> tightening, I think they were a bit higher than the manual.
>
> Then one of the valves froze at 2000 miles after the head rebuild
> - 1200 after I replace the head gasket. Head had been retorqued.
> This is when they said nothing they did caused the valve to
> stick. They added an external oil feed as they said it was not
> getting lubrication, plus new valves, seats and guides.
>
> When I checked the block it seemed good, but I was doing around
> the head studs.
>
> Oh, when I got it home and started looking at it, 2 valves were
> less than .004, the rest were one each .005 through .010.
>
> Just looked back at the head gasket. It doesn't look so good. It
> has holes around the sealing ring.
>
> Roger
>
> On 04/03/2017 06:11 AM, ptegler wrote:
>>
>> upon installing the head after the first rebuild, did you
>> re-torque the head after the intial warmup up/cool down heat cycle?
>>
>> did you use new head studs? what spec did you torque to? proper
>> order of studs?
>>
>> Paul Tegler ptegler at verizon.net <mailto:ptegler at verizon.net>
>> www.teglerizer.com <http://www.teglerizer.com>
>> On 4/2/2017 10:25 PM, Chris Simo wrote:
>>> Any chance the block is not flat?
>>>
>>> On Apr 2, 2017 7:55 PM, "Roger Elliott" <elliottr at rmi.net
>>> <mailto:elliottr at rmi.net>> wrote:
>>>
>>> Hi All,
>>>
>>> I have a 1980 Spitfire, the head has been rebuilt twice in
>>> the last 2,500 miles. (Shop claims something happened
>>> between first and second rebuild, so not their fault)
>>>
>>> Anyway, I have taken it for a few drives ~60 miles at a time
>>> and all seemed good, so we were going to take it on a bit
>>> longer drive.
>>>
>>> 35 miles from home, the temp gauge is pegged, I put in lots
>>> of water - maybe not quite a half gallon. Started up to try
>>> to drive back home, there was lots of white smoke from the
>>> exhaust. I don't think it was smoking much if at all before
>>> it overheated as I was kind of keeping an eye on the car
>>> behind us and did not see smoke.
>>>
>>> I got 3 miles and decided to call a tow truck. It was low on
>>> water again - at least a quart in those 3 miles.
>>>
>>> I used a leak down tester - though didn't really do a real
>>> leak down test - to see if the cylinders were holding air.
>>> All seemed fine except 4 which was not holding air and I
>>> could hear the air coming through the radiator water was
>>> bubbling.
>>>
>>> So, I took the head off expecting the head gasket to be
>>> blown or something obvious with the head.
>>>
>>> Head gasket was fine. My checks of the head with feeler
>>> gauge and straight edge indicated it is flat. I don't see
>>> anything wrong with the head.
>>>
>>> Do I need to have it checked for cracks? Or what else could
>>> be wrong?
>>>
>>> Or could it be that the overheating loosened the head enough
>>> that water got past the gasket?
>>>
>>> Thanks,
>>>
>>> Roger Elliott
>>>
>>>
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>>
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