B6 S4 B7 S4 and RS4 built motors from JHM

[RX-Heven]

Also are these still the rods and pistons that are going into these engines?

Yes

[G-Rat]

And who’s to say that the SC and nitrous are mutually exclusive?

Built motor + Stage 2 SC + plus 100 HP of naawwzz for 2nd, 3rd and 4th gears = 9 second 1/4 mile

;D

I have always been a big fan of the JHM Nitrous kit. JHM brought in one of the original pioneers in automotive nitrous development as a consultant on the project.

It takes a great amount of work to actually get this kit, let alone nitrous itself to work, on the S4. As many of you have seen, guys show up tell you how they are going to add nitrous to their cars and then disappear. That’s because they car fights against what you’re doing and if you don’t know what you’re doing you’re rewarded with a blown motor. You can’t simply just hook up nitrous to the S4 and have it work.

The JHM nitrous kit is good for a solid 200+whp. They only give people a 75whp shot but, its actually a little more impressive when you look at the testing.

http://audirevolution.net/addons/albums/images/935101296.jpg

I just can’t get over that torque gain. Can’t even imagine the torque curve on a 200hp shot.

[justincredible]

So I’m curious if a slushbox can handle stage 2-3?

justincredible has a built motor B6 S4 with a fairly massive nitrous shot. Maybe he can chime in.

There is a point to where the automatic starts to fumble with all the power. The tq converter flashes unlocks and flashes. The jhm tcu program helped with the nos. The automatic transmission in the b6 s4 is very very strong. I haven’t had an issue yet and I spray a good amount more then the kit came with. I don’t advise anyone else to do that I have a built but not sleved motor.

[sakimano]

So I’m curious if a slushbox can handle stage 2-3?

justincredible has a built motor B6 S4 with a fairly massive nitrous shot. Maybe he can chime in.

There is a point to where the automatic starts to fumble with all the power. The tq converter flashes unlocks and flashes. The jhm tcu program helped with the nos. The automatic transmission in the b6 s4 is very very strong. I haven’t had an issue yet and I spray a good amount more then the kit came with. I don’t advise anyone else to do that I have a built but not sleved motor.

what’s your fastest 1/4 mile time/trap with the built motor and bigger shot?

[G-Rat]

Cam adjuster…

My wishlist also includes lower compression pistons and a stroker crank.

:o

[DWITH]

Not to rain on your parade but these are already insanely under square motors for the revs they turn and not a whole lot of room for more stroke. Lower static compression doesn’t make a whole lot of sense as either, as the ecu is advanced enough to handily control things at the boost levels currently seen. In the case of Apr and tts well in the double digits. Rs4 no doubt can even play with dynamic compression via phasing on exhaust cam as well. These aren’t pushrod single cam motors… ford coyote motors make stupd power on similar compression with boost.

[euroswagr]

Cam adjuster…

My wishlist also includes lower compression pistons and a stroker crank.

:o

That wasn’t a wish list item, JHM posted pictures on their Facebook of what looks to be JHMed cam adjusters, or at least they are beefing them up maybe.

https://scontent-b-iad.xx.fbcdn.net/hphotos-frc3/t1/1538645_10202240007174552_655188714_n.jpg

[Jake]

OR…

Maybe they are made from scratch ;D

[wolfs4]

I’ve heard hints at possibly cheaper as well…

[euroswagr]

Damn 2014 is gonna be a helluva year…

Wolf, call JHM up and get a set…give ol Koolaid some chain love

http://www.aux.tv/wp-content/uploads/2012/11/tpain-koolaidguy.png

[G-Rat]

Not to rain on your parade but these are already insanely under square motors for the revs they turn and not a whole lot of room for more stroke. Lower static compression doesn’t make a whole lot of sense as either, as the ecu is advanced enough to handily control things at the boost levels currently seen. In the case of Apr and tts well in the double digits. Rs4 no doubt can even play with dynamic compression via phasing on exhaust cam as well. These aren’t pushrod single cam motors… ford coyote motors make stupd power on similar compression with boost.

Makes sense. I guess I just like the extra margin of safety. Plus I feel like you can make more power by adding boost than the higher compression adds overall.

I change my wishlist item to some new cams. ;D

[komseh]

This is awesome. I can’t wait to hear more details on what’s being done with the RS4 because I’m very interested in going that route eventually.

[ChrisK]

Can we get some more details on the timing components and any upgrades there

[bangoman]

jbones, justincredible, euroswag… any other chain warriors on here?

[euroswagr]

I change my wishlist item to some new cams. ;D

We are like the grinch…don’t worry about cams either, it has been tested and stock cams will do just fine.

All you need on your wish list is built motor and supercharger…and of course supporting mods

[MDUBZ]

jbones, justincredible, euroswag… any other chain warriors on here?

I think Jake was hinting at some in house made mechanical cam adjusters. I’m doing a full timing replacement but haven’t been told anything about that option yet as I will definitely do those too.

[G-Rat]

I change my wishlist item to some new cams. ;D

We are like the grinch…don’t worry about cams either, it has been tested and stock cams will do just fine.

All you need on your wish list is built motor and supercharger…and of course supporting mods

I thought the only company to try cams was Schrick (sp)? My standard opinion with this platform is that even though another company has tried and failed, I don’t trust that a mod is worthless unless JHM gives it a try.

But fine… fine… wishlist updated to just the SC and built motor. Maybe add a new wife to the list, because she’s going to leave me if I drop $20-25k on modifications for a $13k car hahahaha.

And yes, I’m a fellow chain warrior. Are we all going to pull our motors to put in the shiny new adjusters? Haha. I’ve been looking for a reason to go back in there and replace the chain and electric adjusters that I couldn’t afford at the time. Oh, headers… need headers too. ;D

[MDUBZ]

Oh, headers… need headers too. ;D

If you’re gonna do it, do it right. If you’re going built motor, it only makes sense to buy headers especially when you consider the exhaust manifolds to be one of the main weak points of this engine. Low flow = heat soak.

[euroswagr]

JHM tested cams

http://audirevolution.net/forum/index.php?topic=1272.msg30591#msg30591

Your on AR for a good reason, so ask the questions and people will show you the way…it was my question being answered…lol

[Maddog]

Oh, headers… need headers too. ;D

If you’re gonna do it, do it right. If you’re going built motor, it only makes sense to buy headers especially when you consider the exhaust manifolds to be one of the main weak points of this engine. Low flow = heat soak.

I kinda wonder if JHM is gonna make headers a requirement for Stg 2 or if they really make much of a power difference with the blower pushing everything through.

No question stock design is horrible, but most the gains were in NA form, and all the risk was based on the stock motor. A sleeved block might not be at as much of a risk.

Just curious. If I did it all over again from stock to stg 1, I woulda just done catless dp, catback and stg 1 blower and been done with it (along with clutch and stiffer mounts). The rest of the stuff was pretty negligible once the blower is there.