1988 TC single Holset turbo 5.0/ 4R70W Reply #390 – April 26, 2011, 03:45:42 PM You the man:headbang: Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #391 – April 26, 2011, 04:13:18 PM YEAH!! You're on you're way now:D Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #392 – April 26, 2011, 05:42:52 PM Got some tach output at the dash, but the circuit board I built appears to have an intermittent short in it so the tach is reading off. I'll just build it again. I did the same thing on the TR7 and it's been good for years. It might just be the transistor, but I won't even mess with trying to fix it. Those parts are real cheap, and i think I even have it all here.Water temp seems to be riding high, like 200-205. I'm going to change thermostats to see if this one is bad. Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #393 – April 26, 2011, 08:56:01 PM 200-205 isn't that high, especially with a big f-ing turbo. I think the stock T-stats are 195. Maybe you need a bigger fan. Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #394 – April 26, 2011, 10:42:15 PM Quote from: Bruce M;358775200-205 isn't that high, especially with a big f-ing turbo. I think the stock T-stats are 195. Maybe you need a bigger fan.I think you are right on Bruce.The sensor is in the hottest part of the engine, too. I think I'll wait on doing anything with it. ThanksWhen the fan comes on the temp drops immediately to 197'ish. Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #395 – April 27, 2011, 03:32:44 PM You know, just a thought.... since your running all 3, (cond. rad. int.) you might want to consider adding a pusher on there too. If it can fit... I mean I'm just saying. I'm sure the airflow is somewhat inhibited among all those components at once you know.... Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #396 – April 27, 2011, 06:17:32 PM Quote from: sarjxxx;358792You know, just a thought.... since your running all 3, (cond. rad. int.) you might want to consider adding a pusher on there too. If it can fit... I mean I'm just saying. I'm sure the airflow is somewhat inhibited among all those components at once you know....Thanks, Steve. I may need a pusher to run when A/C is on to get airflow when idling in traffic.I was just nervous about the numbers I was seeing, but in fact they are pretty much in line with what I SHOULD see based on the fact that I have a 195 thermostat. I was used to seeing it a little lower, but that was on different combos. I will be keeping a close eye on it for sure. The fan really doesn't run much now, so the rad seems to be adequate for present temps and conditions.I haven't added the wideband in yet since I wanted to burn off the initial oil and other residue. I didn't want to foul a relatively expensive sensor just to start since the AFR's aren't really critical at this stage.I took my last available week of vacation, so I'll have next week and the week after to get the dash sorted, brakes done, and try to get it in paint. Oh, and get some stuff done around the house so I can keep the better half happy!BTW, I set the park brake and put the car in reverse and drive to see if it engaged the gears. That also works OK (while static). Looks promising that I may have gotten a good trans. Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #397 – April 27, 2011, 06:23:29 PM Oh, hey......I want to report an apparent success on the PS mod. The TC rack and Explorer pump appear to be playing nice with each other, and it is DEAD quiet! Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #398 – April 27, 2011, 10:39:15 PM ooooooh lucky. A quiet PS pump AND a working transmission. Wow if the couple of startup problems are all you're going to have on this build then you're gonna fly through it;) Of course we all know that's never the case....:( Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #399 – April 28, 2011, 05:07:14 AM Quote from: sarjxxx;358838ooooooh lucky. A quiet PS pump AND a working transmission. Wow if the couple of startup problems are all you're going to have on this build then you're gonna fly through it;) Of course we all know that's never the case....:( Yeah, the problems I have antited haven't all come to be, but some of the surprises have been the most challenging. I have a new set of PS lines here I thought I'd need, and a new rack. I'll just keep them as spares until I need them I guess.I had to put the battery back in the TR7, so I am going to get a new one today. I ordered a set of Gabriel air shocks for the back from Rockauto for 25.00 on closeout. They have a couple sets left at that price as of yesterday.I'll order the front struts and the paint this week, too.Are the quad shocks still available anywhere?EDIT:Found these http://www.summitracing.com/parts/KYB-KG4521/Application/?query=Year|1998|Make|FORD|Model|MUSTANG&prefilter=1 Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #400 – April 29, 2011, 07:00:06 AM Well, I hit my credit card for the first time on this build. $613.00 for paint and materials with shipping. Going with TCP Global base/clear over high build primer. Also bought a 1.3 mm tip HVLP gun to try for clear, and some tape, a can of spray dye for the dash cap, and some paper. Tires will be the next big dollar hit. Hopefully I can save enough to pay for that out of my allowance. I still have to buy the front struts and front brake rotors and wheel bearings, too. I picked up a brand new battery and a few more quarts of Mercron V last night and burned up a $100.00 bill.At least it's getting close to being driveable now.My TR7 has a front wheel bearing making noise. I noticed it yesterday coming home from work. A buddy and I have modified the front hubs to take a larger front bearing, and he finished machining my spare hubs a few days ago, luckily. I can go get those and the new brake setup as well. It's based on dual piston calipers instead of the floating caliper setup I have on it now. I've had lots of trouble with shimmy with them, and wanted to make a change. I'll be modifying the front struts a bit to relocate the lower spring perch a little lower so I can get my ride height down an inch or so. I'm out of adjustment presently.Anyway, back to the Tbird. I am going to build up a new tach signal generator circuit and get it installed, then find the issue with the coolant and fuel level gauges before I start on the brakes. I'm intending to have the brakes all done by the end of the weekend so I can take it for a short ride down the road and back. Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #401 – April 29, 2011, 03:06:55 PM Well, a couple more things off the list.1. Got the temp gauge to read out. Isolated a bad sending unit, and AZ had one in stock. Works like it should, now. $7 fix.2. Tach readout. Before I rebuilt my circuit I stuck on the V8 tach I had here and it worked. I SHOULD have been able to make it read 1/2 the rpm's by selecting 1/2 speed in Megatune at the tacho input pulldown, but it didn't work. I checked over my MS real quick and it was wired right. Got into the settings, and on a whim tried to DE-SELECT the output 2 (went from RPM to OFF) in the output menu. That seems to have fixed it and the 4 cyl. tach is silky smooth and right on what MS says for RPM. I won't argue with it, I'll just make a note and press on. Now I can use the stock boost gauge which is inside the tach. :D One area the Megamanual is weak in is the tach. There are so many possibilities it's hard to document it all.3. Got the GM voltmeter hooked up and reading right. I'm pulling power from the back of the tach and grounding on the IVR ground. It shows at 1/2 the scale at 12.4 (key on engine off) and at 3/4 scale when the alternator is charging. Pretty slick if I do say so myself!All that's left on the instruments is to figure out why the fuel gauge isn't working. It acts like it's not getting a ground. I'll try to run a separate ground to the harness near the tank and see what happens.Pretty good day all in all.EDIT: Thinking about it in hindsight, it all makes sense. MS is probably giving the chance to use output 2 in the outputs menu in a different way and in addition to the tacho output, so I was sending the signals twice to my poor tach circuit. It was confused! In my mind I was setting the type of output coming from output 2 and going to the tacho pin. Just wasn't so. Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #402 – April 29, 2011, 04:54:04 PM Very productive day. You are knocking out the bugs left and right! I'm excited for you.On 3. what do you mean by 1/2 scale and 3/4 scale? Do you mean that the gauge was reading at about 1/2 with KOEO and 3/4 with the engine running (alt charging)? Or do you have the gauge really change overall scale when engine is running?I want to modify my gauge cluster to include a voltmeter instead of the ammeter for sure. Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #403 – April 29, 2011, 05:54:57 PM Quote from: The Shredder;358991Very productive day. You are knocking out the bugs left and right! I'm excited for you.On 3. what do you mean by 1/2 scale and 3/4 scale? Do you mean that the gauge was reading at about 1/2 with KOEO and 3/4 with the engine running (alt charging)? Or do you have the gauge really change overall scale when engine is running?I want to modify my gauge cluster to include a voltmeter instead of the ammeter for sure. Key off engine off the needle is buried down. When I turn the key on with engine off it rises to where the amp meter always reads; dead center. Once the alternator comes on line the needle rises further to about 3/4 scale up from the bottom, to the hash mark between center and full scale. So, middle=12v, and 3/4 = 13.5v. Pretty easy to glance at and see if things are normal for conditions.I couldn't find where anyone had documented doing a voltmeter mod (in the stock gauge face), so I kind of hacked this one up myself.The car is in nice shape, and the wiring is un-molested aside from my mods, so troubleshooting is pretty straight forward on this 'normal' stuff. The ABS might be a challenge if it needs work. Hopefully it will be in decent shape as well. I have 3 or 4 master units around here, so I should be able to fix what ever it needs.Gotta get the fuel gauge going first off. Quote Selected
1988 TC single Holset turbo 5.0/ 4R70W Reply #404 – April 29, 2011, 07:16:18 PM I'm glad to see everything working out on this project! Quote Selected
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