Power mods for the I-5

[marin8703]

hey sorry to revive this thread but i was kinds curious.

Can someone with the proper technical knowhow tell me if the h3's engine and trans, the whole powertrain can handle the addition of a supercharger. Is stuff gona break or explode for sure or most likely not?

Im just curious because i was reading the h3t concept specs and it had a supercharged I5. So im thinking maybe they thought about people wanting to supercharge the I5 and made the whole system tough enough.

What do you think?

Thanks!

[timgco]

The best and only way to improve the acceleration and mpg is to hook the H3 to the back of an H2, put the H3 in nuetral, and relax. It works great.


Some have had issues with the K&N kits, some dealers have stated it will ruin the MAF sensor and void warranty, others have had good luck, B&B exhaust will help very little also. Other than that, there's not much out there to really make a huge difference. SC's and Turbos will give you issues and cause more issues off road.

This truck will never be like your Z was. But it will crawl like a mult when you shift into 4LO.

[marin8703]

well i doubt that will really help much, since the h2's spedo shows only 10mph more, and its 0-60 rating is 1 second faster, correction .6 of a second faster. But anyway i am not concerned with speed or power or anything like that.

I was just being curious if anyone knows how tough the I5 is and if it was the same one that was since the initial planning, from when it was a concept vehicle, or if it was heavily modifed to fit production costs? The concept one on the h3t is with a supercharger.

If anyone knows from experience or technical specs, would stuff break on the h3 definately or not?

Thanks for your responses!

[usetosellhummer]

ahhh come on michael j Fox had the Mr. Fusion in the deloren... how about ptting your old garbage in the airbox to enrigh the flow with meth

[HummBebe]

Like I said...GM got 20 more HP. Then they ditched it.....no mas Vortec 3500

No sense in getting the nitty gritty, it's not worth the time.

fini

[f5fstop]

Ah, but GM got the 20+ HP from boring the engine out to a 3700. The engine is capable of obtaining quite a bit more HP with a turbo or SC, but unless GM offers it, it would void the powertrain warranty.
Later engines, or those with the new cylinder head, should be able to take the extra HP, as long as you keep it low, around 270. This is not from any GM official information, but from what I know someone did with this engine.

[HummBebe]

The best and only way to improve the acceleration and mpg is to hook the H3 to the back of an H2, put the H3 in nuetral, and relax. It works great.

Been there, done that, got the t-shirt

[HummBebe]

So if that is all they did, was bore, we will now have 10.5:1, 11:1??

Will they now have to step up in octane rating, or will the computer take care of it?

[hummer_metal]

Agriv8r told me I was nuts if I posted what I added to my H3 to give it a little more power and increased gas mileage.

I'm not sure about spamming this site.



He kinda chuckled at me and told me about this forum. Now I have only had it a couple days, and not sure if it works as I have had the same tank of gas in.

However, say I am tricking myself to believe that it is working is fair enough. But I believe that I am getting 3 maybe 4 miles more to a gallon. HP, well I am not so sure about this yet.

[hummer_metal]

ebay item number 330004099308

[Wisha Haddan H3]

Originally Posted by hummer_metal

Agriv8r told me I was nuts if I posted what I added to my H3 to give it a little more power and increased gas mileage.

I'm not sure about spamming this site.



He kinda chuckled at me and told me about this forum. Now I have only had it a couple days, and not sure if it works as I have had the same tank of gas in.

However, say I am tricking myself to believe that it is working is fair enough. But I believe that I am getting 3 maybe 4 miles more to a gallon. HP, well I am not so sure about this yet.

Popular Mechanics did some testing and didn't think much of that kind of device. I'm pretty skeptical myself. http://www.popularmechanics.com/auto...tml?page=1&c=y

[PARAGON]

Originally Posted by hummer_metal

Agriv8r told me I was nuts if I posted what I added to my H3 to give it a little more power and increased gas mileage.

I'm not sure about spamming this site.



He kinda chuckled at me and told me about this forum. Now I have only had it a couple days, and not sure if it works as I have had the same tank of gas in.

However, say I am tricking myself to believe that it is working is fair enough. But I believe that I am getting 3 maybe 4 miles more to a gallon. HP, well I am not so sure about this yet.

you would have better chance if you stuck one of this in your H3






Do you use one of these for recoveries?



Cool stuff!

[wpage]

Had some improvement in performance by adding S&B Filter replacing stock air filter. In addition cut a 3" hole and inserted a aluminum flex tube running out under thru front starboard wheelwell to hole in bumper as a natural ram with a common air conditioner filter.
My estimate 5-10% gain in torque and hp. Impact on warrentee after cutting hole in air plenum is unknown!

[PARAGON]

.

[fourfourto]

Originally Posted by wpage

Had some improvement in performance by adding S&B Filter replacing stock air filter. In addition cut a 3" hole and inserted a aluminum flex tube running out under thru front starboard wheelwell to hole in bumper as a natural ram with a common air conditioner filter.
My estimate 5-10% gain in torque and hp. Impact on warrentee after cutting hole in air plenum is unknown!

Nots not a good idea if your going through water

Ram air + water = blown moter


I dont have the factory ram air on my 68 442 so I made one and have two 3 inch hoses running down under the bumper(used 2 wet vac attachments for ducts at bumper and metal elbows from home depot at the air cleaner).

[wpage]

GM Did not do thier homework,
There are mods that can enhance the H3 with upgrades...
A. Add S&B Air Filter replace stock filter for beter aspiration.
B. Cut 3" hole to air plenum and add aluminum flex air tube from plenum to bumper air foil.
C. Modify air input to battery and rerout direct to air input.
Result 5 -10 % increase in HP and torque with no loss in MPG and potential increase in MPG dependent on driving.
Regards,
W Page

[PARAGON]

Originally Posted by wpage

GM Did not do thier homework,
There are mods that can enhance the H3 with upgrades...
A. Add S&B Air Filter replace stock filter for beter aspiration.
B. Cut 3" hole to air plenum and add aluminum flex air tube from plenum to bumper air foil.
C. Modify air input to battery and rerout direct to air input.
Result 5 -10 % increase in HP and torque with no loss in MPG and potential increase in MPG dependent on driving.
Regards,
W Page

A. GM is not going to put high-flow oil cover filters in their vehicles. Paper filters filter to lower microns, period. How do you think it get's higher air flow?

B. I'm sure the engine breathes fine. If you are referring to your stupid ass ram air idea you posted above. OK. But why would you add flex crap when it restricts flow. Why not make a smooth tube like someone with any logical knowledge would do?

C. I don't think having air going to the battery is going to do much.

D. Do you sell these? http://www.turbonator.com/

http://www.electricsupercharger.com/

[HummBebe]

Originally Posted by wpage

GM Did not do thier homework

Oh yeah, and .....