Updated: Pics on post #28. Billet turbo with SP Quick spool valve.

[IJ.]

Brad: It made 1054Nm with the lighter Crank being the only change so you CAN'T take Dyno's too seriously it's all about how they Ramp up that effects the final figures.

ie: If you can do anything to make them ramp sooner the numbers will be higher and my 3540R hit really hard from low in the pull hence the big Tq.

 

[Poodles]

Hence why people see "gains" from running a lightweight flywheel...

 

[crisp]

tekdeus,

Just coming onboard this thread... so I'm catching up on the early posts! Wanted to say "thanks" for the link! This is all good stuff for my noggin to digest for a spell!


PS: As you guys have speculated... with Ian's head, despite my LOW overall HP and modest mods, I'd say my spool-up TORQUE is pretty intense with the flow from this top-half... relatively speaking!:biglaugh:



-crisp

 

[tekdeus]

I got the AEM water/methanol kit installed yesterday and did some dyno tuning today to aim for 11.5 AFR's with higher boost. On 94 octane pump gas, we got as high as 24psi and they detected light pinging around the 5000 rpm tourque peak, so we backed off the base timing 2 degrees and ended up running 22psi with 50/50 water/meth. The mustang dyno reads around 15-18% lower than a Dynojet and I did 389hp and 373tq which is around 450rwhp on a Dynojet. I then went to the track tonight and my trap speed hit 114mph (I ran really poor "unmentionable" times/ET's due to wheel spin and hop on street tires ) Trap speed can be used to estimate rwhp pretty accurately with the conversion calculator: http://www.rpmoutlet.com/dyno.htm. My car is almost 4000lbs with me in it and the calculator estimates my rwhp to be 462 with a trap speed of 114. Over 500 crank HP on a stock 7M This engine rocks!

The car is a riot to drive on the street like this! It's a whole new level of fun +1 for billet turbo + methanol!

The meth kit is set up on the biggest nozzle (615ml/min) and sprays progressively starting at 5psi and full spray by 12psi with no quench or engine misfire at all! This will be nice when I am dipping into 5+ psi during uphill cruising etc. when the stock ecu forces a stoich ratio of 14.7.

We ran out of time and I wasn't able to test the spool valve specifically, but I will post up the boost numbers which show that boost rises very fast to 9psi when the valve opens, then levels off and carries on. It is definately working to spool the turbo!

 

[91T breezen']

Brad;

With the 50/50 mix you're probably not getting the huge flames out of the exhaust are you? The expensive washer fluid is 50/50 meth/water isn't it?
You have to line up against Tejon again in July!!!:naughty::icon_bigg

 

[tekdeus]

Flames? Probably not, the goal here is cool pistons and safety! I now have 50+ more rwhp than Tejon's Mk4

On the street, the spool is faster than the dyno sheet shows, perhaps because of the dyno load? Because I know that I hit 15psi at 3600 in 4th gear. Due to problems getting a cheap hobbs switch to work well, I currently have the SP valve plumbed directly to boost source. So it starts to open at 5psi, and is fully open around 11psi, opening progressively. If you guys know where I can get a super accurate and reliable hobbs switch, please let me know. Otherwise I will have to wait until I get a standalone to control the valve properly. I'm starting to believe it needs to be controlled by a standalone to open progressively between 9 and 13psi(or by having more actuator spring preload). Because with the hobbs switch opening it instantly, it was very unsmooth, and it seemed that my AVCR boost controller had trouble controlling boost when the exhaust pressure went from super high to low in an instant.

You can see how fast is goes from 3psi to 8.5psi between 2920rpm and 3250rpm, then when the valve opens, the spool slows down, then carries on, leaving a fair amount of spool and low end power on the table. You can also see on the power curve how steep the power is rising up to 3250rpm when the valve opens, leaving the turbo to do the rest of the spool at it's normal rate. So at least is it doing what it is supposed to, and the SP valve concept works. :bigthumb: Judging by the angle and speed of spool and power up to 3250rpm, it looks like I might be able to still move the rest of the power curve over 300-500rpms if I tighten the spring preload on the SP valve actuator to open later! :aigo:

The green line is boost PSI, numbers on the right side. Blue line is A/F ratio:

HP and TQ:

 

[kikdurazz]

Is a Mustang dyno really that much lower then a dynojet. Only ask because I have dynoed on both and my numbers were not that far off from each other.

353 rwhp/379 rwtq on Mustang dyno
381 rwhp/397 rwtq on dynojet dyno

could be the tune but both were relatively close in dyno time to each other and a/f slightly leaner on the dynojet.

From what I was told by the dyno guys it was maybe closer to a 7-10% difference.

Either way impressive numbers glad to see you are happy with the setup. Are you still on the Lex/safc? Any fuel cut on the top cause looks like your pushing over 20psi or you have a FCD.

 

[MK3Brent]

That's a lot of boost for under 400hp.

 

[Zazzn]

I was going to say something.. but I guess you guys are already... Something fishy is going on here... 6265 and you are only getting 389? Something is going on here. I made 445 WHP on a 2 1/4 crush bend IC lower pipe/stock IC/ t04b 60trim (clipped exhaust really fing laggy) @ 18 PSI.

Also who's doing the tuning and what size nozzle for meth. When John tuned my car we did 24 PSI on my 67 and not a hint of knock. I'm running 50/50 with a m15 nozzel....

As for the spool valve, I just sold a hobs switch I should give you the part number it seemed to work well for my meth, but you must realize hobbs switches are on or off devices they don't ramp up.... I also believe you should keep the spool valve closed until more psi say 15-18 hell even 20 psi. The reason being is you are not creating a restriction until you see a power dip on the dyno and you are only hurting your spool by having it open so quickly.

Just food for though

Love your car as always

 

[upgradedsupra]

I was going to say something.. but I guess you guys are already... Something fishy is going on here... 6265 and you are only getting 389? Something is going on here. I made 445 WHP on a 2 1/4 crush bend IC lower pipe/stock IC/ t04b 60trim (clipped exhaust really fing laggy) @ 18 PSI.

Also who's doing the tuning and what size nozzle for meth. When John tuned my car we did 24 PSI on my 67 and not a hint of knock. I'm running 50/50 with a m15 nozzel....

As for the spool valve, I just sold a hobs switch I should give you the part number it seemed to work well for my meth, but you must realize hobbs switches are on or off devices they don't ramp up.... I also believe you should keep the spool valve closed until more psi say 15-18 hell even 20 psi. The reason being is you are not creating a restriction until you see a power dip on the dyno and you are only hurting your spool by having it open so quickly.

Just food for though

Love your car as always

You missed the part where he said "MUSTANG DYNO" I was there helping him out when dynoing and car runs great. The dyno (local) reads lower than most. Many people with same tune add more than 50 rwhp when going to a dyno jet from this dyno, seriously, but, numbers don't matter, trap speed does. He is trapping 115 mph in the 1/4 and not getting through the gears quick. He will trap at 117-120 which is on par with 500 if you guys really care about the numbers.

Good job Brad and your car freakin hauls ass now! BTW Brad, Mikes car is 500 rwhp and you only lost by a couple of cars when you were at 15psi, I think you got his number now. :evil2: He called and I told him a few fibs for fun. :biglaugh: (he did this to us so why not give what he gave. lol)

PS: You also have a stand along, huge difference to what Brad is running.

Duane

 

[Zazzn]

btw when i say 445 that was on a stock 7m!! on piggy backs... (emanage blue)
Anyway's i'm not saying there is anything wrong with the setup brad, I'm saying something is wrong, you have a boost leak or many or a billion, maybe low compression... maybe something else... but something is amist here. 24 PSI on that turbo will put you well in the high 500 range...

I vote that you do a quick IC leak test...

go to home depot, buy a PCV end cap, tap it for 1/4 barb, put the air blower of your compressor in a vac line and hook up the other end to the barb, put the pcv over the turbo and put a big coupler to seal it.

set the compressor for 40 psi and check for leaks.. You'll hear some leaking though the TB but that's normal just feel around all the coupler joints or spray some soapy water... you are loosing like 200 hp somewhere.

 

[MK3Brent]

I agree. Mustang dyno or not.

For reference, I dyno'd 380hp on my stock engine and then 564hp with my built motor. All other parameters equal.

 

[tekdeus]

It made 30 more hp at 24psi, and we ended up settling on 22psi with 2 degrees less base timing to make the 389 number. I'm not too concerned about the mustang dyno numbers. On a Dyno Dynamics I dyno'd 393rwhp on my 57 trim ct, and the car currently feels dramatically faster. Plus as Duane said, my 1/4 mile trap speed with tons of wheel spin suggests over 460 average rwhp.

For pump gas on a used, stock 7M with 62mm turbo and stock ECU, I'm not gonna complain. I want to enjoy it for the summer and not blow it up.

I will check for boost leaks though. Other factors may have been that it was quite hot that day, and I only have a small spearco style intercooler that is super oily inside from the last worn out turbo; I haven't had a chance to pull it and clean it. Also my last compression test was 130-140 across the board with a 2mm MHG.

Will know for sure when I dyno on the Dynojet at Suprafest in July.

 

[Zazzn]

sounds good, brent!

Yeah i'd say about 430-440WHP, at 480 whp on my 1jz i did 117 trap.
on my aristo at 380 on a dyna jet I did 109 mph.

 

[MRSUPRA]

Remember, all Mustang dynos do not read equally lower. The Mustang dyno that I used was also a heartbreaker that consistantly read 14-16% low.

With a standalone ECU and cams, Tekdeus's car will really wake up like mine did. When I had a stock head with stock ECU, I hit about 500rwhp sae at 24psi with C16. Now I'm only about 5 rwhp less at 17psi pump gas using the AEM, 264 cams and light headwork.


Also just for reference: My heavy targa car trapped at 120mph at about 480rwhp.