I have a 258 from an '87 YJ and there is this 12ga red wire that disapears into the intake in the plate directly under the carb. Is this some sort of carb heater? I believe it's factory but then again this motor did have alot of mods done to it.
258 Carb heater?
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I recall there is a relay in the 258 equipped Jeeps that handles the carb heater. Take a look at the wiring diagram from any '81 or later Jeep vehicle with a 258 and you'll find the circuit.
I have the same dangling wire on my '77 J10 with '85 CJ manifolds. It's not connected. I expect my truck would run better in cold weather if I connected it, but it's low on the priority list. The coolant circulating through the manifold will keep the carb warm, once the engine is up to temperature.Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
ECO Green: '15 FCA Jeep Cherokee KL Trailhawk
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You could always wire it to a switch and just turn it on until the engine is warm.1973 Wagoneer, 4.6L Jeep inline 6 stroker, t176/d300, offy dualport w/ quadrajet, pertronix, flowmaster
"Roads? Where we're going we don't need roads." -- Doc Brown https://forums.ifsja.org/images/smilies/cool.png
"When this baby reaches 88 miles per hour, you're gonna to see some serious shhttps://forums.ifsja.org/images/smilies/eek.pngt!"
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Dave
The few. The proud. The browless.
Somewhere between prissy and pristene
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