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Author Topic: TPI onto 86 Block  (Read 140881 times)

Offline 123 pugsy

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TPI onto 86 Block
« on: May 29, 2007, 05:03:16 am »
I have an 86 350 4 bolt with World Products S/R heads in my truck now as I chewed out the thrust bearing in the 283. Can I use the TPI unit I have on this? I'm not sure of the location of the knock sensor.Does it go in the block or the cylinder head? I know I have to drill out the 2 center intake holes on a different angle.I've ordered an oil pressure switch with the disconnect for the fuel pump. I will weld in a bung for the o2 sensor on to the crossover pipe just behind the connection to exhaust manifold.

Any other things to consider before I start?

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Pugsy
76 C10 LWB
TPI 350

Offline VileZambonie

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Re: TPI onto 86 Block
« Reply #1 on: May 29, 2007, 01:19:10 pm »
The knock sensor goes in the cylinder block where you probably have a plug now in the coolant jacket adjacent to the cylinder walls. So you have the ECM, the ignition system and harness too right? Don't forget with TPI you want an in tank fuel pump also that can sustain 47PSI.
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Offline 123 pugsy

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Re: TPI onto 86 Block
« Reply #2 on: May 29, 2007, 02:17:13 pm »
I have have a threaded plug in 2 sides of the lower block.I use either of theses holes?I have a full wiring harness,distributor,PCM.There is a 2 pin hookup on the distributor I'm not sure of. I haven't found a wire that fits in there yet. I have the steering column and key and I made up a bypass resistor for the VATS. The key resistor measured 1129 OHMS and I made 1 up from 2 resistors in series equalling 1144 OHMS. I read on a website that I should be +/- 5%. I was thinking about getting an in line electric fuel pump. Any thoughts on this?
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Pugsy
76 C10 LWB
TPI 350

Offline VileZambonie

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Re: TPI onto 86 Block
« Reply #3 on: May 29, 2007, 03:03:48 pm »
you can use either hole but I believe the harness is set up for the pass side. Do you have the pigtail that goes to the ignition coil from the module? As far as the VATS resistor you can pick up resistors so cheap you'd be better off matching the chip and then just wiring it in. Make two one as a spare in case one ever fails.

As far as the fuel pump being in the tank- several reasons for this. When you draw fuel from the tank rather than push fuel from the tank it can create low pressure which decresases the vaporiztion point of the fuel which could easily result in vapor lock - especially in warmer weather. Consistant temperatures are more easily maintained within the tank and noise is drastically reduced. You can get a Camaro pump and plop it in an 87 sending unit no problem. 
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Offline 123 pugsy

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Re: TPI onto 86 Block
« Reply #4 on: May 30, 2007, 12:14:54 pm »
I like the idea of having less fuel pump noise for sure. Not having to worry about vapor lock is definitely a bonus. The 2 parts combined add up to the price of an in line pump ( $20.00 more) ,so why not?
I've already made a VATS bypass and I do have 1 extra.
About the distributor and coil pigtails: I can't find a 2 pin pigtail that fits the distributor or a 4 pin that fits the coil???? :-\  ???
Also:What's the module?
Sorry if I sound a little hi tech illiterate,but that's just because I am.....but I gotta learn this stuff sooner than later.I want to use all the fuel injection technology on my future projects to have a nice clean burning engine. ;D
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Pugsy
76 C10 LWB
TPI 350

Offline VileZambonie

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Re: TPI onto 86 Block
« Reply #5 on: May 30, 2007, 04:07:15 pm »
There is a pigtail that comes off of your ignition module. The module is in your distributor. There's a small harness that connects to the ignition coil from the module. If you don't have one you can rob one at a junk yard without any special tools. Don't worry about your questions -ask away.
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Offline 123 pugsy

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Re: TPI onto 86 Block
« Reply #6 on: May 30, 2007, 08:10:13 pm »
     I found half the pigtail for the coil in the wiring harness.Its a pink from the key and a white. I also found a pigtail for the module in my junk box. So I just need 1 more pigtail at the coil to connect to the module.I'll go to the wreckers for one.
     How about the EGR? If I have a block off plate where the EGR sits,what kind of trouble will this cause? I'm thinking it will throw a code? Is there a way to bypass this so I wouldn't need a custom chip?
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Pugsy
76 C10 LWB
TPI 350

Offline VileZambonie

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Re: TPI onto 86 Block
« Reply #7 on: May 31, 2007, 05:22:37 am »
Just hook up the EGR. If you want it off simply unplug it. Otherwise leave it - It's not a bad thing.
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Offline 123 pugsy

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Re: TPI onto 86 Block
« Reply #8 on: May 31, 2007, 05:31:52 am »
I just don't have it. I don't want to buy one if I don't have to.
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Pugsy
76 C10 LWB
TPI 350

Offline 123 pugsy

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Re: TPI onto 86 Block
« Reply #9 on: May 31, 2007, 06:37:30 am »
Will the 87 sending unit fit into my 76 20 gallon tank?
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Pugsy
76 C10 LWB
TPI 350

Offline Captkaos

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Re: TPI onto 86 Block
« Reply #10 on: May 31, 2007, 12:58:08 pm »
Quote from: 123 pugsy on May 31, 2007, 06:37:30 am
Will the 87 sending unit fit into my 76 20 gallon tank?

yes it will physically fit.  The 73-86 tanks don't have the baffles in them like the 87 tanks do.  So if you have a lot of sloshing it could cause fuel delivery problem.  I know S&P put them in stock tanks all the time (or at least they told me they did).
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Offline VileZambonie

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Re: TPI onto 86 Block
« Reply #11 on: May 31, 2007, 03:16:06 pm »
You don't have just the EGR valve or the whole set up with the solenoid?
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Offline 123 pugsy

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Re: TPI onto 86 Block
« Reply #12 on: May 31, 2007, 08:25:13 pm »
[[/quote]

yes it will physically fit.  The 73-86 tanks don't have the baffles in them like the 87 tanks do.  So if you have a lot of sloshing it could cause fuel delivery problem.  I know S&P put them in stock tanks all the time (or at least they told me they did).

[/quote]

Thanks Chris. So if I keep it filled up,it should be fine I take it.
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Pugsy
76 C10 LWB
TPI 350

Offline 123 pugsy

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Re: TPI onto 86 Block
« Reply #13 on: May 31, 2007, 08:34:06 pm »
Quote from: VileZambonie on May 31, 2007, 03:16:06 pm
You don't have just the EGR valve or the whole set up with the solenoid?

I have the solenoid but it looks pretty beat up.The plastic coating from the coil is busted off and the pigtail is half broken inside.
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Pugsy
76 C10 LWB
TPI 350

Offline VileZambonie

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Re: TPI onto 86 Block
« Reply #14 on: May 31, 2007, 10:45:58 pm »
Well it will still run the same without it- It will just cause SES light to come on if you even hook it up
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