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Messages - thunderjet302
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Suspension/Steering / Re: RLCA.
I run Maximum Motorsports extreme duty adjustable RLCA and stock uppers with new bushings. The lowers have spherical bearings on each end, so you want the stock uppers with rubber bushings to prevent binding in the rear suspension.
Just a FYI if you go with the Maximum Motorsports RLCA.
The spherical bushings on both ends of the RLCAs allow for all of the articulation that the rear susp. needs. Poly bushings are what can cause the binding.
Rubber in the uppers will help with some NVH, but aren't required to reduce binding.
I asked Jack at MM about putting poly bushings in the stock uppers or adding tubular uppers with poly bushings with their control arms and he said not to. I'd have to find the email conversation but it was related to them causing articulation issues, even with the spherical bearings in the lower arms. Stock uppers with rubber bushings were what he recommended. Jack knows his stuff so I did what he recommended .
Your post was worded like the spherical bearings in the lowers was the issue, not poly in the uppers. (You didn't mention poly until now). And yes, Jack for certain knows what he's talking about.
Yeah, poly bushings feel great...right up until they don't. Then you're skittering off into the ditch.
You need some sort of allowance for articulation in the rear suspension.
Yeah it came out kinda confusing. I was trying to explain that with the MM RLCA you want to keep the stock uppers and rubber bushings so the suspension continues to articulate correctly. Don't add poly bushings to the stock uppers or replace them with tubular uppers. Just don't use poly bushings in the rear suspension period.
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Suspension/Steering / Re: RLCA.
I run Maximum Motorsports extreme duty adjustable RLCA and stock uppers with new bushings. The lowers have spherical bearings on each end, so you want the stock uppers with rubber bushings to prevent binding in the rear suspension.
Just a FYI if you go with the Maximum Motorsports RLCA.
The spherical bushings on both ends of the RLCAs allow for all of the articulation that the rear susp. needs. Poly bushings are what can cause the binding.
Rubber in the uppers will help with some NVH, but aren't required to reduce binding.
I asked Jack at MM about putting poly bushings in the stock uppers or adding tubular uppers with poly bushings with their control arms and he said not to. I'd have to find the email conversation but it was related to them causing articulation issues, even with the spherical bearings in the lower arms. Stock uppers with rubber bushings were what he recommended. Jack knows his stuff so I did what he recommended .
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Suspension/Steering / Re: RLCA.
Just a FYI if you go with the Maximum Motorsports RLCA.
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Misc Tech / Re: HR980 A/C Issues
https://www.foxtbirdcougarforums.com/index.php?topic=41436.0
Rock Auto had new 6P148A compressors listed but not anymore. This was the part number:
https://www.rockauto.com/en/moreinfo.php?pk=3911826&cc=1140297&pt=6628&jsn=1257
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Misc Tech / Re: HR980 A/C Issues
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Misc Tech / Re: HR980 A/C Issues
https://www.rockauto.com/en/catalog/ford,1988,thunderbird,5.0l+302cid+v8,1140297,heat+&+air+conditioning,a/c+refrigerant+hose,6900
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General Fox T-Bird/Cougar Discussion / Re: Kinda jonesin' for a Mark VII..
I had a Mark VII for about 3 years. It was a nice car. A little heavy but comfortable. The air suspension was easy to fix as well. If I had another one I'd just replace the air suspension parts and call it good.
I also had an MN-12. Heavy car with garbage front suspension. I was never really happy with it.
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Misc Tech / Re: Air Conditioner R134a conversion
So.......where the heck is the orifice tube on these '88's?? 5.0 XR7.......??? Thanks!
The orifice tube is in the line that runs between the evap core and condenser on the passenger side. It hugs the frame rail right above the K-member.
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Engine Tech / Re: Proper injectors for stock Speed Density 5.0
Vacuum leak.
OP said car has 20" of vacuum at idle. It could be a vacuum leak but that reading is on point for a stock engine.
But I wouldn't be surprised by a vacuum leak somewhere either.
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User Rides / Re: 84 Tbird project
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Engine Tech / Re: Proper injectors for stock Speed Density 5.0
41, 42, 91, 92 narrows it down. Check the oxygen sensor harness. Make sure that the harness is intact and plugged in on the correct sides. If the right side oxygen senor is plugged into the left side oxygen senor connector (for example) then there will be all sorts of screwy problems.
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Misc Tech / Re: Air Conditioner R134a conversion
The new condenser is the parallel flow type used on SN95 Mustangs but listed as the stock replacement for 88 Thunderbirds.
Any info on the condenser? Get it at RA as well? Part number. Thanks.
It's this one, part number 3554: https://www.rockauto.com/en/moreinfo.php?pk=6377508&cc=1140297&pt=6708&jsn=910
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Misc Tech / Re: Air Conditioner R134a conversion
That being said the compressor in the Four Seasons kit works fine, you'll just need to modify the stock rear bracket to make it work.
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Misc Tech / Re: Air Conditioner R134a conversion
There were a couple of issues with the installation. First off the new compressor is slightly larger and has the rear mounting ears about 1/4" further back than the stock compressor. I had to slot the stock bracket that bolts to the rear of the compressor so I could attach the rear mount. Secondly the fittings on the lines are R12 fittings. Normally just using the R134a adaptor fittings would be fine. But in my case they wouldn't allow the Maximum Motorsports strut tower brace to be installed, as it would hit the R134a fittings. So the adaptors for R134a were installed to charge the system and removed afterwards to clear the strut tower brace. Thirdly the high pressure line is right up against the Performer RPM intake. That wouldn't be an issue with the stock intake. My suggestion, if you have and aftermarket intake or a strut tower brace, is to use the 87-93 Mustang high and low pressure lines for more clearance.