More New Scrambler Details

BHDs tend to be heavy, though. Aside from weight distribution, you might end up having to open Pandora's toolbox on chassis strengthening and the suspension, too, if you put something that heavy and capable of that much torque in the likes of a Grand Cherokee.

Speaking of improvements, though, have you noticed the driveline on the Touareg? SIX speed automatic and a 4.56 axle ratio. Wonder if that'll inspire some keeping up mit das Jonezen among the competition.

Cheers,

--Joe

well in general i am wary of running any sort of forced induction non intercooled... a s/c heats things up too just by compressing the air :) not as much as a turbo perhaps but still, its just something i'm always nervous about... and btw, my exhaust temps never get above 1300deg ;) i think i would crap myself if i looked down and saw a 2k reading (indicating how lean, among other things i was running!)

There are quite a few stock cars that run a water to air intercooled setup - in recent years, the lightning, and new cobra. subaru, vw and others have had similar systems in the past. The main reason i suggested it wasnt so much to push ultra boost levels, but for space reasons.. a very small ic can be used, whereas the same size in an air to air setup wouldnt do a darn thing, plus its not reliant on getting an ic into the airstream. w/a intercoolers arent really designed for heavy boost use, as after a certain point the water or water/alch could never flow fast enough to carry all the extra heat away, as well as stay in contact with the fins long enough (opposites :)

-Steve 98 TJ

thats exactly why a small water to air would be perfect :)

it splits up the components so it doesnt all have to be located in the same place.. u can have the resevior in the rear if you have a powerful pump (pull type not push, usually)

i've seen small 2x4x6 cores used on 300+ (whp) cars and the housing can be placed inline with the TB.. on the 4.0 i would think the perfect place is where the stock airbox is, as the housing would be the same size or smaller with the core mentioned above.

unless, is this where you have the blower?

heres an ok site ( i dont have any of my other links at the moment - theyre in work) but this is the basic model of the w/a i made for the 7. his setup is ok, but they can be made much smaller in fact..

i REALLY like these IC's (look for pwr barrel towards the bottom of the page) and they are verymountable in the air tract if you have 10" straight length to spare anywhere inthe system, but these setups start to get pricey.-Steve 98 TJ

haha ok i should have looked before posting. :) i can see how that doesnt leave any place for you to plumb an IC :) oops.

re: water or alch injection, i just started dabbling in alch injection, but have come to the conclusion tis a totally non-streetable (with confidence) setup..

by the time iw as done remapping the injectors (it would play havoc with the fuel curve when the secondaries (and the water/alch injectors now acting as tertiary) injectors came online.. so anyways i played around until it ran superbly with the alch injection, but let me tell you.. when your resevior runs dry, or close to, youre sunk. i went so instantly lean it was scary.. there was nothing gradual, no lead in... it just went from near perfect stoich to holy crap shut it down NOW in about a second running wide open. it was the same as if i just unplugged a few fuel injects at that moment. it did run well with it

- but this is my daily driver too, i could never feel comfortable with alch injection (tuned properly)

-Steve 98 TJ

probably isn't that long for a supercharger, but it's looong for a single turbo.

Dave Milne, Scotland '99 TJ 4.0 Sahara

: : : -- : My governor can kick your governor's ass :

Goat Crapp did pass the time by typing:

Yep. :)

If I do a water injection it will be with an interlock. Prolly borrowing the existing low level switch from the windshield washer bottle, using it in the reservoir, and tying it to the shutdown relay so it's impossible to run low without going into limp mode.

thats why its good to have an aggressively geared tranny.. make 1st almost unusably short, and launch it at ridiculously high rpms.. with a higher redline, youre still into boost when you drop to the next gear, but under a normal launch, youre absolutely right.. theres no smooth transition with a single large turbo. totally different schools of thought, tho... but in the 7 (large single turbo conversion), i'm still getting sub 2second 60 footers.. which is pretty quick. (best to date was 1.7x on drag radials. haven't gone with slicks yet because i drive to and fro the track, and just dont have room for the extra set of rims with mickeys on them.)

-Steve 98 TJ

excellent idea :)- what size resevior will you run? you'd be surprised at how fast it eats through it. ( i had a small 1g resevior because well.. i have NO room for anythign else and couldnt sacrifice my washer fluid resevior ;) i use it far too often haha.

-Steve 98 TJ

Goat Crapp did pass the time by typing:

Anything more than 1g is going to be a hard fit without locating the reservoir outside the engine compartment. Wonder if the washer reservoir could be used for both purposes? I'd have to be real careful and know what is in washer fluid. If it's just alcohol then there shouldn't be any problem. There is more space between the outer and inner fenderwell but that would require a custom tank.

Those are two totally different statements. If you meant the second one, that's what you should have said in the first place and I wouldn't have argued the point.

4.56 is the final drive ratio, not the rear axle ratio. 6th gear in a Toureg is .69 and driven thru the current axle ratio the engine revolves 4.56 times for each wheel or axle revolution. The Toureg has a rear axle ratio of somewhere around 3.15.

That's the point - it seems everyone has heard the phrase and understood it except you. However, you are going to make an ass of yourself by justifying it to the bitter end, instead of saying "Oh right" and shutting up, no doubt. (btw, I didn't say it in the first place at all)

Dave Milne, Scotland '99 TJ 4.0 Sahara

: > I'm aware you are having extreme problems understanding the "no replacement : > for displacement" phrase, so let me spell it out for you. It means "its : > easier and cheaper to have a big lower tuned engine than a small highly : > tuned engine". Obviously anything you can do to a small engine, you can do : > to a big engine. : >

: > Dave Milne, Scotland : > '99 TJ 4.0 Sahara : >

Approximately 10/13/03 09:16, Jatniel Juran uttered for posterity:

With a rear axle ratio of 3.15, and a 6th gear of .69, the overall drive ratio is .69 x 3.15, or 2.17. Now if the person you "corrected" was right, then a 6th gear of .69 and a final drive ratio of 4.56 would be a total final drive ratio of 3.146...which is what I recall as the actual numbers.

Perhaps he has Carroll Shelby and John Holmes [aka Johnny Wadd] confused and is remembering it as "no substitute for inches".

Approximately 10/13/03 13:07, Dave Milne uttered for posterity:

LOL !

Somethings can't be added

Dave Milne, Scotland '99 TJ 4.0 Sahara

: > Dave Milne, Scotland : > '99 TJ 4.0 Sahara : >

: > : > I'm aware you are having extreme problems understanding the "no : > replacement : > : > for displacement" phrase, so let me spell it out for you. It means "its : > : > easier and cheaper to have a big lower tuned engine than a small highly : > : > tuned engine". Obviously anything you can do to a small engine, you can : > do : > : > to a big engine. : > : >

: > : > Dave Milne, Scotland : > : > '99 TJ 4.0 Sahara : > : >

: >

: >

: : : -- : My governor can kick your governor's ass :

VW says "4.56 Axle Ratio" on their website, which would make more sense to me in the context of a gearbox with six speeds forward. (I wonder if you're supposed to use first gear in routine driving.)

Axle ratios like that are familiar enough in off-roading and serious cargo/trailering setups for light trucks, but with the three- and four-speed transmissions traditionally found in USAmerican pickups and SUVs, the price is sharply limited top speed, lousy highway gas mileage, or never seeming to have just the right gear at intermediate speeds (pick one or more). With a five- or better yet a six-speed you can at least in principle have your cake and eat it too.

Cheers,

--Joe

You need to look up the word "replace" in the dictionary. 'Nuff said.

Approximately 10/13/03 19:57, Ad absurdum per aspera uttered for posterity:

That is one heavy little pig. I suspect it might be a bit boggy if you try to take it off in second.