3800 M90 Build

[jd4242]

I wouldn't be surprised if you hit 250ish HP and 300ish TQ at the wheels, if not more.

Not even close with these tire and trans or atleast not with the 3.25 pulley.he said if i was on stock tires it could make about 50+ more hpdisappointed in the numbers,he seamed surprised tho.said he didnt think it would make over 180hp

 

[Ronin8002]

well hey, if you can feel a big boost in power and it's more fun to drive than it used to be then I'd say its still worth it.

 

[Dono]

Yup, worth it for sure.
You know your way over where you were.

Do you have your boost gauge hooked up? Whats max boost psi? I'm betting pretty low (Just because your motor flows so well).

 

[Ronin8002]

C'mon JD, don't leave us hanging now

 

[jd4242]

ok ill start with the excusesyou ready because there will be ALOT.keep all this info in mind when you do see the numbers.starters i tell the guy im expecting around 250ish hp,he breaks out laughing and said "no way with those tires on it",then says" i will be shocked if you break 180hp" i say no ####n way,this is a fully built motor with a sc on it!!!he said i would bet you the cost back if you went back to 3.73 and stock tires that you would make 50-70hp more,i then call his bluff and tell him a had the stock axle and tires at home and would switch it next weekend for that amount of money.he said he would stand by that statement and brought another guy over to even witness it.so then goes on to say that the A4ld is the worse trans every for eating power and not holding power,witch i knew.

we did 7 runs,3 with the 3.25 and 4 with the 2.7. on the end of the 5 run my alternator blows up and starts to eat itself so he does 2 back to back runs and calls it.he said that the alt could have been bad the whole time costing me hp from the low voltage and drag,last 2 runs for sure.he said its possible it could have been eating alot,he didnt have a number but said low voltage and drag is a guarantee.

he writes me 4 tunes-(0) 3.25 pulley -(1) 2.7 pulley (2) 2.7 minus 2degrees (3) 2.7 minus 4degrees.said he did that in the tables also but said these on the knob would be for (2)bad gas and (3) for HIGH HEAT or if ic goes out.he said he could have got another 20hp out of it but these are very safe tunes for 4x4ing and mountains.

he raised my rev limiter to 6000 and it made power all the way to red line.he wanted to raise it more,said with those dual springs,cam and tune it would be safe up over 6500.i told him leave it at 6000. i saw a max boost with the 3.25 pulley of 6.5lbs and with the 2.7 i hit 9lbs.now the disappointing numbers,again remember all that crap above.i did 186.6 with the 3.25 pulley and 207 with the 2.7those may look real low but if this was in a stock truck that would be around 280ish + that little extra he thinks he can gethe said to come back when i get my 5speed and he bets i get 15-25 more hp just by getting ride of the a4ld and some from having a good alternator.said he would bet i can get to 250hp after that with more tuning.i also so a max air temp after the blower of 132* at 9lbs of boost and 109* at tb

so my conclusion,DONT EXPECT BIG HP NUMBERS FROM A 4.0 4x4 OHV WITH BIG TIRES:thumbdwn: but i will say one thing,this thing is freakn crazy.the roads are wet around here and it will break loose with barley any gas unexpectedly.just getting up to speed at like 35ish it will break loose and get sideways .every down shift no matter the speed will break you loose,its kind of scary!!i couldnt even get to do a full throttle pass as it just couldnt keep traction,but a 3/8 throttle was about all i could do and it was pretty freakn fast.only got it to 6lbs and i was done

was it worth the cost......that has yet to be answered but the one of a kind and the HUGE increase in power...PRICELESS

dyno run,these was the last two pulls with the 2.7 and the alternator was bad.turn your volume down!!


and a 3.25 pull and think my rev is still set to 5000 in this one

 

[Ronin8002]

Well I for one am still impressed....you did an awesome install and the fact that you're breaking 36" tires loose on the street makes me think that no matter what the numbers say, you're making a good deal more power than you were before.

What were your torque numbers? Post your dyno sheet..I'll bet you've got a load of torque in the lower RPM range.

 

[Dono]

JD, you don't spend your time on the dyno, you spend your time driving.
So, with the changes, you know you were way below that before. If your rubber is tearing loose all the time, it had to be a huge success!

Congratulations!!!!

p.s. with my setup, I'm seeing temps of 230 at 4-5lbs boost post M90 compared with your 132 at 9 lbs boost.
I have inter-cooler envy.

 

[jd4242]

JD, you don't spend your time on the dyno, you spend your time driving.
So, with the changes, you know you were way below that before. If your rubber is tearing loose all the time, it had to be a huge success!

Congratulations!!!!

the streets are wet,but have a feeling even on dry road it will break loose if i try,i literally didnt push pas 3/8 throttle.yea its huge difference just gota look past those low numbers,numbers would be something to brag about in a street truck or ranger.not what this was built for.

Well I for one am still impressed....you did an awesome install and the fact that you're breaking 36" tires loose on the street makes me think that no matter what the numbers say, you're making a good deal more power than you were before.

What were your torque numbers? Post your dyno sheet..I'll bet you've got a load of torque in the lower RPM range.

Thanks.i honestly never really paid attention,think they was around 250ish,dont think my printout has them,ill check.he also had problems keeping it in 3rd for the lower rpms,again pos a4ld.yea he said not to pay attention to the dyno hp as it will feel way different on the street.

 

[Dono]

I think the real deflating part is that your running to the end of mods on this motor.
What next JD? New trans....

Then your on to your next vehicle build. Killer v8

 

[jd4242]

I think the real deflating part is that your running to the end of mods on this motor.
What next JD? New trans....

Then your on to your next vehicle build. Killer v8

Motor wise im done.with these low of temp i aint even going to do w/m.there is an endless list for other things,new trans is up there for sure!ive done the v8 thing many times,no rush to do it again.
o ps if you youtube Explorer v8 supercharged,there is a ex with a v8 sc that is only putting down 280hp

 

[jd4242]

I just did a pretty good pull with fred aka xeek in the truck.traction still is a big problem.broke loose in first,had to feather it to hook up and shifted at 5200,had to feather it when shifted to keep from breaking loose.then couldnt get right back in it,but eased to wot up to 5800 till both of us was SCARED to death.i saw 9lbs of boost at 5800rpms and 85mph in 2nd gear.fred said he pissed his self and was done and so was i!! It got up to speed VERY quick and just was nervous about breaking loose at those speeds that i just didnt want to play anymore we was both shaking by time we got back home,its a hand full to drive on wet roads and im not talking like it was raining wet roads but it had rained earlier and the roads were still wet.we was sideways more than we was straight.cant wait to have some fun on dry roads

 

[Xeek]

Even tho he ain't put the power down on the dyno rollers, it deff feels quick as hell now. It was a turtle runnin in peanut butter compared to now. Haha
Those wet roads were hell, tap the throttle pullin into traffic and it breaks and fishtails quick. I checked my pants and took a poop as soon as I got home hahaha.
If the road was longer I'm sure we woulda held 9psi longer up to 100mph. But that was damn fun. Deff worth the money just for the trill of the ride.

And I want another ride when the roads are dry lol

 

[Dono]

It would have been nice to know the pre SC dyno numbers to the wheels, on the same dyno.

The SC had to add pretty good hp/$.

Xeek...You next? Lets bolt one on to yours now.
We could find you an older SC off a Supercoupe like I'm using pretty cheep. The SC is the cheep part though. Id say that Im still below $2000.00 on the whole thing.

Exhaust is going to push me over the top easily though.

I will find a dyno after and see what disappointing numbers I have. I still thing the numbers produced depend a lot on the type of dyno and calibration of it. Also, as JD painfully found out..Drive train loss thru big tires, and tranny.

I find it hard to believe that a new OHV motor on stock truck off the factory floor would have pulled 160hp off the dyno JD was using.

JD, your truck sounds way more fun to drive than mine. I still have the auto 4x4 enabled. I'll have to perform the brown wire mod to keep mine in 2 wheel drive just to see.

 

[jd4242]

It would have been nice to know the pre SC dyno numbers to the wheels, on the same dyno.

The SC had to add pretty good hp/$.

Xeek...You next? Lets bolt one on to yours now.
We could find you an older SC off a Supercoupe like I'm using pretty cheep. The SC is the cheep part though. Id say that Im still below $2000.00 on the whole thing.

Exhaust is going to push me over the top easily though.

I will find a dyno after and see what disappointing numbers I have. I still thing the numbers produced depend a lot on the type of dyno and calibration of it. Also, as JD painfully found out..Drive train loss thru big tires, and tranny.

I find it hard to believe that a new OHV motor on stock truck off the factory floor would have pulled 160hp off the dyno JD was using.

JD, your truck sounds way more fun to drive than mine. I still have the auto 4x4 enabled. I'll have to perform the brown wire mod to keep mine in 2 wheel drive just to see.

It doesnt have much to do with the dyno,its just my truck.pos tranny and HEAVY tires,gota remember my tires are 36x14.50 on a steel 15x10 rim,i can barley pick them up. The dirt girps are the heaviest tire PJ made.stock truck normally dont pull 160,if you search on here for dyno number your see they pull around 130-140. Again he swears up and down my truck will pull 277hp if i put stock tires and gears back in and he said he could write a track tune to get another 20hp and who know what my blown up alternator was eating,so really i could be puttjng down damn near 300hp with stock tires and stock gears.ill see how much i gain from the 5speed swap and might even throw a set of 33x10 on there that are lighter just to seeits very hard for a NA ohv to hit 200hp thats built

 

[Dono]

Id like to see that!
I'd be super happy if I could pull off 1 hp/cubic inch of my motor. Thats 241hp. Extremely respectable.

To manage to pull close to 300 would be crazy.

 

[jd4242]

Id like to see that!
I'd be super happy if I could pull off 1 hp/cubic inch of my motor. Thats 241hp. Extremely respectable.

To manage to pull close to 300 would be crazy.

Its very hard for a NA ohv to hit 200hp,some very built ones havent even hit it.i would guess you would be at 170hp NA or a little less.i gained about 10hp per lb of boost.it would all depend on your boost amount but i think your make less hp per lb of boost just based off your motor,high temps and type of m90,i would guess your be around 220-230hp even at 9lbs.your going to have alot of drivetrain loss too because of the awd transfer case.

 

[jd4242]

It would have been nice to know the pre SC dyno numbers to the wheels, on the same dyno.

The SC had to add pretty good hp/$.

Xeek...You next? Lets bolt one on to yours now.
We could find you an older SC off a Supercoupe like I'm using pretty cheep. The SC is the cheep part though. Id say that Im still below $2000.00 on the whole thing.

Exhaust is going to push me over the top easily though.

I will find a dyno after and see what disappointing numbers I have. I still thing the numbers produced depend a lot on the type of dyno and calibration of it. Also, as JD painfully found out..Drive train loss thru big tires, and tranny.

I find it hard to believe that a new OHV motor on stock truck off the factory floor would have pulled 160hp off the dyno JD was using.

JD, your truck sounds way more fun to drive than mine. I still have the auto 4x4 enabled. I'll have to perform the brown wire mod to keep mine in 2 wheel drive just to see.

It doesnt have much to do with the dyno,its just my truck.pos tranny and HEAVY tires,gota remember my tires are 36x14.50 on a steel 15x10 rim,i can barley pick them up. The dirt girps are the heaviest tire PJ made.stock truck normally dont pull 160,if you search on here for dyno number your see they pull around 130-140. Again he swears up and down my truck will pull 277hp if i put stock tires and gears back in and he said he could write a track tune to get another 20hp and who know what my blown up alternator was eating,so really i could be puttjng down damn near 300hp with stock tires and stock gears.ill see how much i gain from the 5speed swap and might even throw a set of 33x10 on there that are lighter just to see

 

[Bruces expo]

That thing pulls pretty hard on the dyno even with the added weight of tires and what not , I was Impressed by the vids ! , I Was Thinking it would make more power than that as well but like your tuner mentioned the big tires and grears have an effect , Staying tuned in for the 5 speed swap and the stock gearing on 33"s !!

 

[jd4242]

That thing pulls pretty hard on the dyno even with the added weight of tires and what not , I was Impressed by the vids ! , I Was Thinking it would make more power than that as well but like your tuner mentioned the big tires and grears have an effect , Staying tuned in for the 5 speed swap and the stock gearing on 33"s !!

Thanks,like he said the numbers dont really mean much because it doesnt allways translate to track time i have 4.88 gears so it will just be the 5speed difference, i may throw a light skinny set of tires on thats as close to the 36s i have and even my 36 measure like 37ish so really to be close to stock gear wise i would need like 34" tires that are LIGHT!think ill weight one of mine and a stock tire just to give you guys a weight difference.
o ps going to probably be end of summer before 5speed swap unless this A4ld blows before,feels like its slipping now and its newly stage 2 built!!

 

[jd4242]

It would have been nice to know the pre SC dyno numbers to the wheels, on the same dyno.

The SC had to add pretty good hp/$.

Xeek...You next? Lets bolt one on to yours now.
We could find you an older SC off a Supercoupe like I'm using pretty cheep. The SC is the cheep part though. Id say that Im still below $2000.00 on the whole thing.

Exhaust is going to push me over the top easily though.
.

$2000 hahahahaha NO WAY!!i spent $700 just on chip,tune and dyno.that not including the sc,sc mount,injectors,tb,maf,piping,fuel pump,belts,gauges and miscellaneous items like clamps/bolts.thats just for mandatory parts.if i had to guess what i had into just the sc and related parts,i would guess im in about $5000 and that doesnt include motor mods or anything,i would say im easily pushing $10000 under the hood..easily! !