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post #1 of (permalink) Old 09-20-2001, 09:59 PM Thread Starter
 
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Team Rush / Ford TFI upgrade

Any personal experiances to share? I just started gathering parts. I got a MSD blaster 3 coil and coil holder. What gap should I put on the plugs? stock is .035 I think. Would an MSD multi spark box show any differance or is this amout of voltage already pusing the ford 6cyl caps' limit?

-Tas
'89 YJ Wrangler, 4.2L, AX-15, 31x10.5" BFG AT KOs, no lift, 40series Flowmaster, Euro-taillights...

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post #2 of (permalink) Old 09-20-2001, 10:01 PM
 
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Re: Team Rush / Ford TFI upgrade

.045-.050

Make it up as you go.
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post #3 of (permalink) Old 09-21-2001, 01:20 AM Thread Starter
 
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Re: Team Rush / Ford TFI upgrade

ttt

-Tas
'89 YJ Wrangler, 4.2L, AX-15, 31x10.5" BFG AT KOs, no lift, 40series Flowmaster, Euro-taillights...

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post #4 of (permalink) Old 09-21-2001, 09:19 AM
 
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Re: Team Rush / Ford TFI upgrade

when you buy the plug wires, get some for a 1993 Jeep Cherokee with 4.0L HO. they are the correct length and have the correct ends. I bought Autolite brand and it came with 2 different coil wires, one of them fit perfectly! i know all of the websites say to use the ford I-6 wires, but each one is at least 6in too long! i could definitely tell a difference in the engine! it feels smoother and likes to rev higher. hope this helps! matt

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post #5 of (permalink) Old 09-21-2001, 02:09 PM
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Re: Team Rush / Ford TFI upgrade

I use a Jacobs Pro Street box with a Jacobs Ultra Coil and plugs gapped at .50. I used this with my stock Dist. cap and I didn't notice a whole lot of improvement. So I switched to bigger "Ford Cap" and rotor and plugs gapped at .50 and wow the difference then was amazing it revs to redline easy. It revs quicker and smoother and gets 2 mpg better fuel econ. so I feel like in the long run it will definitely be worth it.

post #6 of (permalink) Old 09-21-2001, 03:03 PM Thread Starter
 
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Re: Team Rush / Ford TFI upgrade

I think MSD makes 8.5mm wires for the '91 4.0L. I'm gonna try to get those today and try to find a red cap and roater


edit: I just found out that those wires are $65!! =(
-Tas
'89 YJ Wrangler, 4.2L, AX-15, 31x10.5" BFG AT KOs, no lift, 40series Flowmaster, Euro-taillights...

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post #7 of (permalink) Old 09-22-2001, 05:04 PM
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Re: Team Rush / Ford TFI upgrade

Get Autolite wires. They are 8.5 MM.

They that can give up essential
liberty to obtain a little temporary
safety deserve neither liberty nor safety.


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post #8 of (permalink) Old 09-22-2001, 10:47 PM Thread Starter
 
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Re: Team Rush / Ford TFI upgrade

I ordered the MSD 8.5 wires: "93-98 Jeep, 4.0L 6-Cylinder PN 32239". I always wanted them so I'll break down and get them this time. I checked out a '95 cap to see if the connections were the same, they are. I got a cap, roater, and cap adapter. I had a feeling the price was high so I went to another store to check. They were $10 cheaper and RED =) ! I retured the overpriced one and got my red cap and gray cap adapt. [img]/wwwthreads_images/icons/laugh.gif[/img]

-Tas
'89 YJ Wrangler, 4.2L, AX-15, 31x10.5" BFG AT KOs, no lift, 40series Flowmaster, Euro-taillights...

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post #9 of (permalink) Old 09-23-2001, 07:52 PM Thread Starter
 
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Re: Team Rush / Ford TFI upgrade

I picked up the wires today. They're pretty damn short. What do I do with that resistor looking thing on the stock distributer?

-Tas
'89 YJ Wrangler, 4.2L, AX-15, 31x10.5" BFG AT KOs, no lift, 40series Flowmaster, Euro-taillights...

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post #10 of (permalink) Old 09-23-2001, 09:10 PM
 
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Re: Team Rush / Ford TFI upgrade

I beleive you're talking about the little round thing that hangs from the stock coil and has a yellow wire going to the + side. Its a filter capasitor and its purpose is to block the interferance from the coil so your radio doesn't get a bunch of static. When I mounted my tfi coil I never hooked it up and I haven't noticed any iterferance on my radio.

88 YJ:4.2 I6 TR upgrade and MC2100
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