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Topics - rhturbo

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General Buick Tech / AC Evaporator
« on: June 20 2022, 01:37:04 PM »
Looks like I need an AC evaporator for 1986 GN. Any ideas on where to get one local in Canada or otherwise ? So far no luck in my searches. Tried kirban and Highway Stars

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General Buick Tech / ZDDP in Oil
« on: March 16 2021, 10:59:06 AM »
Hello everyone,
Not trying to start an oil thread. Just want to know what options i have for oils that have the zinc content that our motors require ? If I use synthetic oil is that ok instead of conventional oil with zync ?

3
Paint and Body / Headliner replacement
« on: February 26 2021, 09:46:00 AM »
Hi everyone,
Anyone know a good shop that can replace my headliner in the Toronto area ?

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General Buick Tech / Turbo tweak Chip ?
« on: July 13 2019, 04:32:03 PM »
Hi everyone,
I have a 86 GN . Completely stock. Car runs mint no issues at all. This is just a Sunday driver for me. Is it worth buying a Turbo Tweak 5.7 Classic street Chip ? Will I notice any difference ?
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A/C, Heating and Cooling / Water under car
« on: July 01 2019, 08:05:03 AM »
Hi Everyone,
My AC seems nice and cold although I will say after an hour of driving it seemed like it wasn't quite as cool. Parked car in garage. Came out an hour later and there was a large puddle of water under car and running out the front. Looks to be coming from passenger side . Is this normal or is something freezing up and then thawing when car is turned off ?

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General Buick Tech / issue with vibration at 60 mph
« on: July 21 2018, 09:43:10 AM »
Hi everyone,
Just discovered this site yesterday. Some great info here. I am new to the Turbo world and just bought a 1987 GN last week. I am having a couple of issues one of them being when I reach speeds of 100kmh (60mph)  I get a bad vibration in the steering wheel and front end seems to be shaking. If I push it past 120kmh (70mph)  it gets better and seems to almost disappear but is still somewhat there. If I go below 80kmh all is good.


I don't believe the rotors are warped because when I apply the brakes its very smooth with no vibration plus that would only show up when braking

The car had a safety inspection before I bought it last week and it passed which means they supposedly checked the front end.  I took it into a different garage to have it looked at. They examined front end and couldn't find anything wrong.  They suggested the wheels needed balancing. Seemed reasonable so I had them do it but problem is still there. They then suggested that I replace the two front tires as possibly one of them had a flat spot or other issue. I replaced both front tires and still same problem.  So $500 later I am no further ahead


I am taking it to a different shop next week that specializes in both  classic cars and high end cars and hoping they can help. Can you think of what might be causing this ? I was thinking maybe a damaged rim (there is nothing visibly wrong) but if that was the case wouldn't that show up when balancing ?

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