supercharged 5.0 true fire 98 explorer sport

4pointslow · June 1, 2015

Explorer

How is the tuning going, have any time to keep it going?

vroomzoomboom · June 1, 2015

sent a datalog off late thursday. still havent heard back from them. getting aintsy

GRNMACHINE · June 8, 2015

GREAT NEWS TIM!!! Been following. Cant wait to see a vid once you get the tunes down.

vroomzoomboom · June 9, 2015

GRNMACHINE said:
GREAT NEWS TIM!!! Been following. Cant wait to see a vid once you get the tunes down.

well i kinda do have a video i did on the weekend that i posted on facebook. with the 20's on and in 2wd it will lay rubber down all threw first gear till it shifts into second. i have text james asking for him to look at the tune because i want to get it done so i can make the strip in july sometime.

GRNMACHINE · June 20, 2015

Awesome-can you post the video or the link? I clicked page 1 by accident, WoW I forgot all the work you did when you got Evil all decked out in black and grey!!

vroomzoomboom · June 20, 2015

not sure if this link will work or not

https://www.facebook.com/vroomzoomboom/videos/o.254521625275/10152892105287513/?type=2&theater

trust me, i havent forgotten how much work i have put into this thing...or money. i was talking to my buddy that painted it for me last week. i was asking him if i could redo it this winter. i always look it over, and there is some spots that has broke out on it, and there are a few chips in it (and i am over picky with this thing most times). if the guy that did the flames on it moves back here i am going to see if i can repaint the truck, and may do some other changes to it as well. but for right now this is just a thought.
i am back to getting it dyno tuned as well. the local speed shop that i always go to for parts can do it. in their old shop they had a dyno and they changed locations and didnt have it there. i had thought they sold it, but they just have it at a different location. i had been giving dono a had with his truck for the last little bit, but now that we have his running, the focus is back onto evil. 4pointslow has been giving me a had with some stuff and i do have a few things that i want to sort out before they do their tuning on it. i am driving it right now. its just good enough to drive, so i also want to put some miles on it as well before it hits the rollers.

vroomzoomboom · July 1, 2015

dyno has been booked. i am hoping that it will go in next week. nervous and excited all at the same time. i am hoping it will hit around the 300 rwhp, and around 350 ft lbs for torque, but who knows. i know some of you guys are thinking over 400, but i dont think it will be that high. there is also i new twist that i am trying to sort out and 4pointslow has been helping me with. he noticed that my tps was not staying at wot on a couple of datalogs. after probing everything trying to find the problem i believe what was happening was the throttle cable was moving around in the bracket (and that was a chance find). now the next one is easy...sorta. a few pages back i posted i went to a larger crank pulley so i can bring boost up. my fear on that was sure it will spin the supercharger faster, but it will also spin everything else faster as well. i have now found my first consequence to that. we also saw the truck not charging to the correct voltage (13.4v at idle). my old stereo had a voltage display, and i noticed that from the first day the 347 went in, but didnt think anything of it. well, now what is happening is the alt is spinning so much faster it is overheating itself (or thats the problem i believe it is). i put 3 different alts on, and the one i have in now will start off charging at 14.4v, then after driving will drop to 13.4v. but at wot, will drop to 12v at one point. i found a little larger pulley from a local shop and tried it. it did work to a certain point, but not good enough

(if you look in the background i have a rebuild from rebuilderinabox.com and with a powder coated housing from turdle but i dont want to put it on in case i fry it)
so now i have to try and find a bigger pulley. the good news is the alt shop told me most gm and ford alt pulleys will fit each other but i may have to put a 8 rib on if i want a larger diameter. thats no big deal but it looks funny with a 8 rib pulley and a 6 rib belt on the supercharger already. i know i can to to asp or pulleyboys for a pulley, but i also dont want to spend 150-200 for just a alt pulley.

also, happy canada day to all canadian members!

CDW6212R · July 1, 2015

Best wishes for the testing, I hope you hit 350 at least.

The alternator issue may be fixed with the pulley change, hopefully that'll do it.

I don't know what sizes are out there, but I noticed on eBay long ago that a Marauder had a clutched pulley. I thought it was trick, and presumably it's OEM, I'd guess it's because the DOHC was a 7500+rpm engine. You might try that if there isn't a large enough normal pulley to use.

BTW, I also have an odd piece, an 8-rib AC compressor. I found out years back that the Super Duty used 8-rib pulleys, and it was no extra cost when I bought a cheap compressor unit from eBay. So I said let me have it, figuring I might need to go to an 8-rib belt some day. That's a good place to get the 8-rib alternator pulley too, but I don't know what diameter it is.

CDW6212R · July 1, 2015

Tim, here's another choice, if you have enough blower pulley choice still. Since you have the custom balancer, made to take any 94/95 crank pulley, maybe the non Cobra crank pulley will bring the rpm's down enough. It supposed to be about a 6.5" size, and you have a 7" piece right? You might be able to use that one, which worked for stock alternators.

vroomzoomboom · July 1, 2015

really i would love to go 8 rib but the big hurdle is the power steering pulley. i did call asp last year and he even scratched his head with that one. theres that, and one idler at the very bottom passengers side that is ribbed. i also forgot to mention i did put the stock sized cobra crank pulley (6 1/4 vs 7 1/4 asp pulley) on last night just to confirm the alt problem and also was curious to see what kind of boost it would make. with the 7 1/4 it makes about 8lbs off boost. the 6 1/4.........4lbs...........

Dono · July 1, 2015

Did you datalog with the larger pulley? did the 12v at wot issue go away?

vroomzoomboom · July 1, 2015

Dono said:
Did you datalog with the larger pulley? did the 12v at wot issue go away?

yup, and it wasnt as bad, but it didnt go away

Dono · July 1, 2015

Oh boy, Whens the dyno date?

vroomzoomboom · July 1, 2015

i should know tomorrow or by friday

CDW6212R · July 1, 2015

vroomzoomboom said:
really i would love to go 8 rib but the big hurdle is the power steering pulley. i did call asp last year and he even scratched his head with that one. theres that, and one idler at the very bottom passengers side that is ribbed. i also forgot to mention i did put the stock sized cobra crank pulley (6 1/4 vs 7 1/4 asp pulley) on last night just to confirm the alt problem and also was curious to see what kind of boost it would make. with the 7 1/4 it makes about 8lbs off boost. the 6 1/4.........4lbs...........

That 8-rib change is hard for us, I've pondered that before. I did discover that that the GT40 302 from Australia has slightly different brackets etc, including a press on PS pulley. I wonder if that PS pump is unique there, or maybe ours has something on the shaft which lets it take the bolt on pulley. I have hunted for those Australian brackets in case I could get them feasibly to see them in hand. It isn't easy, the best I saw was a $75 set and they didn't ship here. Here's a picture of their GT40 engine;

vroomzoomboom · July 4, 2015

i found a bigger pulley. i was going to buy the one from the guy i got the crank pulley from at first, but went back to the shop i got the other one from. they had a pulley off i believe a 7.3 f250. its a 8 rib, but its also one less pulley i will need if i ever get the cash together to do a 8 rib conversion. what ticks me off even more is i now cant use the one i got jon to powder coat for me

this is the good news, the bad news is when i checked it last, its still doing the same thing. i have yet to put my new alt on because i was afraid i was going to burn it out. now i know its back at the same or very close to the same speed i will have to try it.

i also forgot to post this as well. on fathers day, my son and i were going to my folks place which is around a hour away from me. it was a nice day so we took evil. i noticed (as well as he did) it was running great. no surging idle, not acting up or anything.....until the ride home when she tossed out a cel.

when you look at the first pic, you can see it BENT the syncro at the top. what you cant see because i dumped it out was the magnet that was smash to bits, and wrapped around the part that spins, and the body of the syncro. the second one is what was left of the sensor. when i put a new one (well, not new i had a spare kicking around) she went back to her old self with the surging idle and what not :scratch:
fourpointslow, i think you explained it to me what was happening with that, but i cant remember. i am very paranoid because it might go in by the end of next week i hope for tuning and i want to make sure i have everything all good with this thing.
this is when it shows that i am a bodyman and not a mechanic lol.

4pointslow · July 4, 2015

Cam syncronizer

That is a typical failure of the cam sensor. happens all the time. The magnet falls off and trashed everything including bending the blade of the synchronizer.

You have stated to me a few times that the engine ran better with the cam sensor broken. I have a new idea for you, or experiment I would say.
Maybe time the cam sensor 180 from where it is now and see if it runs better at idle. If it runs worse then put it back the way it is now. Just a thought.

The other thought was that with the cam sensor being bad the engine is in FMEM (failure mode effects management) or what other manufactures call limp mode. Runs off a different strategy so maybe it seems better since the truck was never finished being tuned.

The symptom you told me about is called surging Idle which has many possible causes including but not limited to the A/F mixture being off, and IAC/TPS problems.

delexploder · July 4, 2015

Freakin syncros and stupid tools lol

vroomzoomboom · July 4, 2015

4pointslow said:
I have a new idea for you, or experiment I would say.
Maybe time the cam sensor 180 from where it is now and see if it runs better at idle. If it runs worse then put it back the way it is now. Just a thought.

i believe i did try that once, and it ran worse and backfired. sorry for bringing it up again. my mind is becoming a foggy haze from having to learn all this new stuff in a short time lol

4pointslow · July 4, 2015

forums

That's why it is so helpful to post on the forum, you have a record of what you did, and the results etc. I find myself going back to older posts to remind myself of things done in the past.

supercharged 5.0 true fire 98 explorer sport

Explorer Torture Tester

Elite Canuck STOCK SUCKS!

Explorer Addict

Elite Canuck STOCK SUCKS!

Explorer Addict

Elite Canuck STOCK SUCKS!

Elite Canuck STOCK SUCKS!

Hauls the mail.

Hauls the mail.

Elite Canuck STOCK SUCKS!

04 GT

Elite Canuck STOCK SUCKS!

04 GT

Elite Canuck STOCK SUCKS!

Hauls the mail.

Elite Canuck STOCK SUCKS!

Explorer Torture Tester

Explorer Addict

Elite Canuck STOCK SUCKS!

Explorer Torture Tester

Featured images

Featured images

Similar Threads