Discussion in 'Need for Speed!' started by ssp.interceptor, February 19, 2012.
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My opinion, WHY? It's pushing things past all safety factors engineered into your ride. Why gamble blowing it up like that? Not worth it.
Yep, I am pushing things past the limit, I think we all are, so you have a point.
But you're talking about a 200 shot, my gut feeling is not agreeing with this.
sure it will handle it. . . tell us how it turns out lol
I moved my post from the other thread over to here. Nick, you could delete your posts about this from that other thread and clean that one up a little more.
That wild combination of parts that you just listed is unreasonable and about 99% likely to never make a single full pass.
Tuning is one thing, a big subject by itself. The combination you suggested cannot work. The stock Explorer 302 has hypereutectic pistons, they can't take high power, especially the nitrous. The block can take some decent power, but not the kind of abrupt power built by that level of nitrous. Those two problems alone would kill the project.
The old 87-92 Mustang HO's have forged pistons, which can handle more power than the block.
The 4.0 V6 Explorers at least have an advantage in their exhaust manifolds. They can get headers to handle who knows how much power, 500+ easily.
The headers for a 302 Explorer aren't good for more than maybe 350hp, ad that's being very generous. I think a 1.5" primary header for a performance 302 is stupid, but that's just my opinion. I know a lot of owners of 302 based engines which use 1.75 to 2.0" headers successfully. If I bought a header for my 347 Mountaineer, it would have to be 1.625" at the least . If I ever do get to build a set, they will be 1.75" for sure.
I think that should all be placed in a new thread, to keep this one organized and clean.
I ran a 100 dry shot on my old 00 mounty with no issues. I actually ran it at the track back to back over 15 times one night and at least 10 of them were with nitrous. I prob went through 20 10lb bottles in the truck. When I took the truck apart and parted it out the motor still ran good and had over 170k on it. The timing chain was stretched as hell though. This was with no tune also!!!! I did blow an accumulator spring from 2-3 in the trans while spraying.
Now onto the question will it hold a 200 shotor even 250? Yes and No..... 1st you need to have a good bit of bolt-on's already(intake, exhaust, headers at least). To do it safely I would not dare try it without a tune to retard timing. Copper spark plugs, Valve body upgrade. I would also use a wet kit so you can control the fuel also. After all that everytime you use it just say a prayer and hold on and hope it holds together!
I agree that 100hp should be no problem for the pistons, but the 250 level never. The goal being 12's, it'll take more than a little gas and the other mentioned items. Boomin knows that too, ask him how quick he was with his combo, and how much time went into that.
A 12, or even 13 second 302 Explorer will take a lot of time and work to make happen. The headers and tight space under hood are the biggest obstacles. If you could solve the header issue first, then the rest would be minor, not cheap, but minor.
seems like a lot of work and money to get a big heavy suv to go fast to me,,
stop grasping at straws, and go big ,,
ive ran 100 shots in 4cyl all day,i would see a 150-200 shots on a v8 302 as safe especially with a tune.i was going to run a 150 on my 4.0
i ran a 150 shot on my 93probe gt also,ALL STOCK..it LOVED it.i know you cant compare motors like that but i wouldnt think twice about doing it to a 302.my buddy runs a 250 in his 89 mustang with nothing but headers and exhaust and it flat flys!!he got it after i smoked him with my probe
You can compare the pistons. The weak link of most stock engines is the piston type, or the head gasket. In the 302, the old HO engines can take more power than the block can take, the block is weaker than the pistons.
The Explorer 302 has weak pistons, like all other 302's besides the HO or Boss 302's. They cannot take the 500-600hp that can often break the block. So the piston is the weak link, or the head gasket, depending on your level or tuning or luck.
I knew guys about ten years ago who were buying the Explorer 302's for $500 or so, to use for racing. They'd sell the heads and intake to recoup some of the cost, and run nitrous in their Mustang race car until it blew. They admitted that they knew/expected the engine to blow, and they were pushing 150hp NO2. In a lighter race car that's a trade off in reliability, but for a racing only car they decided it was fine for them. I wouldn't do it.
Yes, agreed. Keep it realistic also when talking about it, newer readers will not be able to tell when you are sincere, versus just stirring up a discussion.
These trucks do have potential, but the limitations keep most people from going far, or make them fall back to the Mustang/typical car for racing. I buy my vehicles based on what I need or want, and then make the most out of them, for me(not for resale).
FALSE the proof is in the bottle http://www.airflowresearch.com/articles/article020/A20-P1.htm
The stock bottom end handled MY 150 shot......your mileage may vary.
Hi Ryan. 150hp was what the guys here were putting to the stock Explorer 302 in 1998, and they'd take it for a few weeks of track use.
I know a guy who sprays 175 in his 302 explorer. Nothing done except a TB upgrade, tune and a nitrous progressor. Went 12.5 in the 1/4. Awd aswell.
What’s cheating? The slip said 1/4 mile.
I’m on a 100 shot now and have seriously been contemplating on bumping it too a 150 this weekend. Maybe a 125 just too play it safe at first
Stock 5.0 block is a weak link, seen block cracked in half with a little over 500 hp, lots of pics of broken 5.0 blocks on the web
You can spray it but will you get the benefits of the full shot?? Only way to know would be on a dyno,keep stepping shot up till not making as much power for the step up or till you got nervous about the size..obviously a wet shot and progressive shot would be best..AND TUNE TUNE ..higher octane, colder plugs,bottle warmer,..etc..id stop at 250 if it was still making good power..but thats with all things working together. .these blocks can be had for cheap..
But would i throw a direct 250 shot,hell no..even with tune,colder plugs, octane..think id quite around 150-175 just to be ""safe""
I've had kits on almost every vehicle and built ranger 4.0ish..I've sprayed a 150 shot at 12lbs of boost with 3* taken out on E50 and it LOVES it..with boost i make more than the 150 shot advertised hp..
With my new motor i make 18lbs and wont tell you my shot size but its built for it sooo..