Gunslinger
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Posts posted by Gunslinger
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There's ethylene glycol and propylene glycol. I don't know anything about Glycerol...it may just be a trade name for one. There re some coolants...like GM's Dex-Cool...that are not compatible with ethylene glycol coolants at all...mixing them will create a cloudy mess that forms clogs and GM had a real issue with aluminum engines overheating and blowing due to not adequately alerting owners and non-GM dealer techs about the issue. Unless one completely flushes the system and changes hoses and anything else internal to the cooling passages mixing types is not recommended. Stick with what's appropriate for the year, make and model.
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The moonroofs Avanti Motors used were not designed strictly for the Avanti...they were adapted from another vehicle (Lincoln I believe)...and thus were neither fish nor fowl when it came to long term durability. They would leak after a time if the glass warped or the roof fiberglass degraded or if the seals dried out. Their drains were channeled into the hog troughs where the water would sit and cause rust.
Most advanced Avanti owners avoid moonroof equipped cars. I know a guy (now passed away) who owned a body shop. He actually had the roof off his Avanti sliced off and a NOS, solid roof grafted on to get away from the problems.
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G13 coolant is not recommended for cars with brass or copper cooling systems and heaters. You should use a good ethylene glycol coolant for older cars. You'll have to change it more often than the long life types but its chemical makeup won't attack the cooling system components or cause clogs.
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If your state allows it I would do as Jim78 says...lose the cat and install a true dual exhaust with low restriction mufflers. Also...as he says...you can buy aftermarket cats and install them but only if you really want them.
Installing a true dual exhaust will do wonders for performance in most cases...especially if you increase the pipe diameter from the factory pipes to 2 1/4" or 2 1/2" diameter.
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Harding…he told Egbert either make the Avanti out of fiberglass or forget it.
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There's a lot of "experts" out there spreading misinformation...even if unintentionally.
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I don’t believe Edelbrock calls them dashpots or throttle kickers…they call idle or a/c compensators or some such name. It’s been a while since I’ve used anything from Edelbrock…great stuff BTW…but I believe they have brackets for them as well.
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Check with Edelbrock…they sell a dash pot for their carburetors which are modern versions of the Carter AFB.
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RQB2175 was the last '74 Avanti...the gas tank was changed at RQB2155. I'm guess that RQB2175 was the last Altman Avanti with a true dual exhaust system before a catalytic converter was added and a single exhaust that split to duals after the muffler. The catalytic converter was pretty much across the board with American made cars beginning with the '75 model year.
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35 minutes ago, Rob Dudley said:
I suspect if you were to park on an angle with the right side high and a full tank then fuel could be forced out the gas cap without the vent on the other side.
Been there...done that. I learned the hard way never to completely fill an Avanti gas tank and park it driver side with any kind of down angle...especially on a hot day.
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The 2001-2004 Avantis didn’t use the older Chevy small block…they used the LS-1 which is actually about 347 cubic inches. Reprogram the computer…change the mass airflow sensor…add a cold air induction kit and you’ve got a engine that acts nice and tame until you give it throttle…all without a lot of financial investment or doing anything substantive or irreversible to the engine.
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It was 305 but it didn’t take much to bump the power up noticeably.
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The term is pretty accurate. Many old time Studebaker owners will argue you down to the last penny on anything.
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It wasn’t the paint so much as the new body material. Blake selected a different process to be able to make the bodies in larger sections to save on the man-hours necessary to assemble it. It took far longer for the material to cure and the new paint was simply incompatible. Most any paint would likely have had adhesion problems as the body hadn’t cured long enough.
If Blake has tried one or a small number of cars to test the new body/paint combination he may have been able to avoid so many problems that caused his ownership to fail. He could easily have left the bulk of production in the original way of doing things until the new process either proved out or…as we know…failed.
Of course…hindsight is 20-20.
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The '84-'96 C4 generation of Vettes is known as "doorstops".
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5 hours ago, 64studeavanti said:
Are you absolutely sure about the depth of the spark plug sockets being different? I have several sets of 570 heads from various Avanti engines as well as older 294, 555 etc heads. As near as I can tell, the spark plug sockets are the same. Additionally, the part number for Avanti 570 heads is the same as for non-Avanti 570 heads. How could you order, or the parts guy get you the correct head, using the same part number?
It's not the sockets that are different...it's the length of the threaded portion of the plug and how far into the combustion chamber the electrode protrudes. They each use the same socket to install and remove the plugs.
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Original size is 6.70-15. The closest P-metric would be P195/75R15 which is difficult to find. It’s much easier to find P205/75R15 which still fits the rims safely.
Be advised that the original rims were not rated to be used with radial tires.
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But it was likely the ‘93-‘04 platform used for the 2005 Avanti since it takes considerable time to adapt the Avanti body to every new chassis. That was the bane of post-Studebaker Avantis…each time the design was produced to a new platform the maker changed the platform. Avanti Motors was in a constant redesign mode for each new chassis for a limited production vehicle. That soaked up time and money and it was all but impossible to amortize production costs.
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Weren't there two Mustang platforms used? The 2005 was on the Fox-body platform and those that followed were the newer chassis. Semantics I know.
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I would say 05/63...production was hitting its stride about then...and the '63 I used to own was a May car. May could have been the highest production month.
August...the production line was pretty much shut down for model year changeover and to sell down the accumulated supply of unsold cars.
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An ‘80 Avanti would only have the quick steering arms if a previous owner installed them. It wasn’t until Steve Blake purchased Avanti Motors in 1982 that he had the new arms made to give the Avanti back its original steering feel.
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9 hours ago, pantera928 said:
So since i have a 1980, you are saying that i have the "forklift" steering?
Yes...you do.
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Actual air pressure depends on the tires. Look at the tire's sidewall and see what the maximum cold air pressure is. Personally I like to keep tire pressures near the maximum. Some tires traditionally used a 32 psi max...some use 35 psi...some 44 psi and some even more. You may have to decide what gives you the best balance of smooth ride and handling but I still suggest 4 psi in the front over the rear for an Avanti.
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When Avanti Motors ran out of the original Ross steering boxes the best they could find to fit was a unit from an industrial fork lift. It did fit but was not good for the car's steering circle. After Steve Blake purchased the company he had the shorter, quick steering arms made to return the steering back to the original performance. The quick steering arms are not conducive for earlier cars with the original steering box...they make car handle different...very "darty" in my opinion...for no appreciable improvement in handling.
If you have the steering box from a fork lift in your car...the switch occurred sometime in the '76-'78 time period...the quick steering arms will help some. For easier cars...don't waste your money.
Catalytic converter fit in 1982
in 1965-83 Avanti
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Again...depending on your state laws and assuming they have special license plates for antique or historic cars, the car may be exempt from emissions regulations. If that's the case you can do as you like. You'll have to check with the state for that.
EGR systems existed before catalytic converters so whether you keep it may have no effect otherwise...not sure of that. I used to have a '78 Corvette that I got rid of the cat and installed a true dual exhaust, got rid of the EGR and the car ran great.