88GT Road Race car build with a 3.4TDC (Page 8/18) darkhorizon AUG 19, 11:08 AM This is the Baer tie rod setup I ordered. Its basically just a custom kit. price is per end (ouch). 6250030 2.600" x M14-1.5RH x 5/8-18RH $42.95 6840009 Tracker Tie-Rod Heim Joint $23.90 6190010 General Motors Tracker Tie-Rod Pin $39.90 Will AUG 19, 12:11 PM quote Originally posted by darkhorizon: This is the Baer tie rod setup I ordered. Its basically just a custom kit. price is per end (ouch). 6250030 2.600" x M14-1.5RH x 5/8-18RH $42.95 6840009 Tracker Tie-Rod Heim Joint $23.90 6190010 General Motors Tracker Tie-Rod Pin $39.90 Cool, thanks! So I guess the 6190010 has the right taper for the tie rod end boss on the Fiero knuckle? You checked that carefully when you put it together, right? darkhorizon AUG 19, 12:18 PM quote Originally posted by Will: I'm working on '88 front knuckles that accept Corvette wheel bearings. Also, what Baer tie rod ends are you referring to? Where do we look for 9 sec Fiero action now? If its a drop knuckle and supports common rotor upgrades it would be something I am interested in for sure. I'm curious with how much meat is in my current knuckles. darkhorizon AUG 19, 04:37 PM quote Originally posted by Will: Cool, thanks! So I guess the 6190010 has the right taper for the tie rod end boss on the Fiero knuckle? You checked that carefully when you put it together, right? Its right enough that it goes in very snugly, yet still comes out without much of a fuss. i did not bust out the trig and dial calipers. Will AUG 20, 09:08 AM quote Originally posted by darkhorizon: If its a drop knuckle and supports common rotor upgrades it would be something I am interested in for sure. I'm curious with how much meat is in my current knuckles. I'm developing the design with an eye toward throwing it over the fence to Coleman to make. They have a "custom spindle" program. I've already had them make my custom drum-in-hat parking brake rear rotor hats. http://www.colemanracing.co...-We-Build-It-W9.aspx Coleman's assembly methods typically use a bolt on upper ball joint boss. Since all years of Fiero knuckles/spindles are quite short from lower ball joint to upper ball joint, there isn't much room to move the stock bearing up to make it a lowering knuckle, and there's even less room to move a larger cartridge like the C5/6/7 Corvette units up. It can be done, but the upper ball joint boss starts getting... more elaborate. I'm looking at 12 3/16 racing rotors like Wilwood 160-2900 & 160-2901, but the caliper mounts will also accept stock C5 Corvette fronts, although there may need to be a simple intermediate bracket... I haven't finished the design yet. There's very little meat for an overbore in the stock '88 Fiero knuckle. Will AUG 20, 09:22 AM quote Originally posted by darkhorizon: Its right enough that it goes in very snugly, yet still comes out without much of a fuss. i did not bust out the trig and dial calipers. Measuring a taper with calipers basically doesn't work anyway. I was actually asking if you inspected it carefully to make sure there wasn't a gap around the small end when the big end was seated or vice versa. darkhorizon AUG 20, 09:15 PM quote Originally posted by Will: I'm developing the design with an eye toward throwing it over the fence to Coleman to make. They have a "custom spindle" program. I've already had them make my custom drum-in-hat parking brake rear rotor hats. http://www.colemanracing.co...-We-Build-It-W9.aspx Coleman's assembly methods typically use a bolt on upper ball joint boss. Since all years of Fiero knuckles/spindles are quite short from lower ball joint to upper ball joint, there isn't much room to move the stock bearing up to make it a lowering knuckle, and there's even less room to move a larger cartridge like the C5/6/7 Corvette units up. It can be done, but the upper ball joint boss starts getting... more elaborate. I'm looking at 12 3/16 racing rotors like Wilwood 160-2900 & 160-2901, but the caliper mounts will also accept stock C5 Corvette fronts, although there may need to be a simple intermediate bracket... I haven't finished the design yet. There's very little meat for an overbore in the stock '88 Fiero knuckle. I am running the old helm knuckles so we will see. The bolt pattern is likely the scariest part. Steven Snyder AUG 23, 01:57 PM I've been running Porterfield R4 pads on my 3.4 TDC 88 Fiero track car for years in stock calipers on 12" C4 rotors. The R4 pads are great. Skip the R4-S, they can't handle the heat. The calipers still suck of course. Porterfield will also make pads for you with any of their compounds on any backing plate. Just call them. I discovered the Willwood pad interchange a while back and keep a set around pre-modified as spares but haven't had a chance to try them on track yet. What tire sizes and compounds are you running? What are your spring rates? darkhorizon AUG 24, 05:34 PM quote Originally posted by Steven Snyder: I've been running Porterfield R4 pads on my 3.4 TDC 88 Fiero track car for years in stock calipers on 12" C4 rotors. The R4 pads are great. Skip the R4-S, they can't handle the heat. The calipers still suck of course. Porterfield will also make pads for you with any of their compounds on any backing plate. Just call them. I discovered the Willwood pad interchange a while back and keep a set around pre-modified as spares but haven't had a chance to try them on track yet. What tire sizes and compounds are you running? What are your spring rates? 255 RE71re square. The front is really stiff, probably 10k, and the rears are probably a 6-8k, but I am not sure, I cant get the spring rates off them.... maybe I'll ask the previous owner. KurtAKX AUG 27, 11:30 AM quote Originally posted by Will: I'm developing the design with an eye toward throwing it over the fence to Coleman to make. They have a "custom spindle" program. I've already had them make my custom drum-in-hat parking brake rear rotor hats. http://www.colemanracing.co...-We-Build-It-W9.aspx What's the ballpark $$ for a set of to-spec spindles?