HEI or TFI which is better? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 01-06-2001, 11:49 PM Thread Starter
 
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HEI or TFI which is better?

Because of my recent aquirement of a mc2100 from a big block I fiquer I may as well beef up my ignition to help burn all that newfound power.Gm hei or ford tfi, some people like one and some the other. I would like to know which is easier to install tune and which gives you the best bang for your buck, thanks.

I need to get a girlfriend I'm getting to close to my jeep.
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post #2 of (permalink) Old 01-07-2001, 12:31 AM
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Re: HEI or TFI which is better?

I remember Team Rush saying something like "TFI will spark in a bucket of oil." He went on and explained, very technically, that in his tests the HEI was far superior.

See I was payin' attentn'




Jason

----------------
[]llll[] '90 YJ, NV4500, XD9000i, 35" MT/R, Snorkle, 4.5" RE lift, Tera Revolvers, etc. etc.
post #3 of (permalink) Old 01-07-2001, 01:44 AM
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Re: HEI or TFI which is better?

[img]/wwwthreads_images/icons/tongue.gif[/img] I'm with Jason on this one.... The GM HEI does have a few little drawbacks, and as one who has had quite a few of them in FS GM pickups, I NEVER leave home without a spare rotor.[img]/wwwthreads_images/icons/crazy.gif[/img] The Ford TFI-Big Cap conversion overcomes the difficulties that the stock GM HEI has built into it.[img]/wwwthreads_images/icons/smile.gif[/img]This is by no means speculation, the TeamRush Ignition Laboratories ran exhaustive tests on both systems.[img]/wwwthreads_images/icons/tongue.gif[/img]

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post #4 of (permalink) Old 01-07-2001, 02:34 AM
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Re: HEI or TFI which is better?

The HEI is a good ignition, but nothing like the TR upgrade. You could do A TR upgrade on an HEI dist, basically moving the coil from the cap, and getting an aftermarket (MSD) module.

Thanks, Ray

post #5 of (permalink) Old 01-07-2001, 04:45 AM
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Re: HEI or TFI which is better?

I have used both HEI and TR upgrade
Without a doubt the TR upgrade is better.
I had problems with the HEI, the worst of which was high rpm,high load, pinging. The HEI has too much built-in mechanical advance for a 258.
Go with the TR upgrade, it's cheaper and easier to do, and you'll get better results, and you'll be using an advance curve that works better for a 258.

CTjeepnut


Funny thing is, the more I practice, the luckier I get
post #6 of (permalink) Old 01-07-2001, 08:49 AM
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Re: HEI or TFI which is better?

i am selling my entire TR upgrade. it includes

cap
cap adapter
rotor
wires
and coil

all stuff is brand new and less than 5 miles on it. I am getting rid of the 258

anyone interested email me at: [email protected]

pics can be shown if interested

figure about $75

thanks

[b]Boston Mangler
89 YJ With A Bunch Of Goodies
See It At:
http://ct-web.unh.edu/yankeetoys/kspeicher/
post #7 of (permalink) Old 01-07-2001, 10:59 AM
 
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Re: HEI or TFI which is better?

I run an HEI setup in the Wrangler (I put in new weights and springs to change the mechanical advance, and an adjustable vacuum advance as well) and a TFI setup in the Postal. I like the TFI much more! The Postal's 232 was a very responsive engine until I screwed with the carb...but thats another topic.

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post #8 of (permalink) Old 01-07-2001, 11:57 AM Thread Starter
 
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Re: HEI or TFI which is better?

Thanks for all the advice. I know what the gm hei is but am only partially familiar with the tfi upgrade. Could anybody explain it to me and tell me what vehical to get parts from. If anybody knows a good writeup I would be thankfull.

I need to get a girlfriend I'm getting to close to my jeep.
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post #9 of (permalink) Old 01-07-2001, 06:30 PM
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Re: HEI or TFI which is better?

There is a good write-up for the TR upgrade on jeepz.com

I like the GM HEI because of the 1-wire hookup, but will be doing the TR upgrade on my other 258 once I get it running

Mark


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83 CJ-7 and 76 CJ-7 with stuff
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post #10 of (permalink) Old 01-07-2001, 10:30 PM Thread Starter
 
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Re: HEI or TFI which is better?

Did you have any problems with the hei?

I need to get a girlfriend I'm getting to close to my jeep.
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