2019 Houston Dyno Day

[drecords]

I posted about this awhile ago -- looks like it got disappeared into the black hole of the internet.

Dyno Day for 2019 at Chris' Car Doc in Humble. Want to get it scheduled with him by Friday, was thinking EDIT 1/12/19 starting at 8am going until noon. Let me know if you're interested below.

Thanks!

[Pranav]

I am game

[Tilton]

I'll dust off the cobwebs to increase turnout.

[blk96gt]

I'm in. Also have a friend who runs TT that wants to join.

[michaelmosty]

I'll dust off the cobwebs to increase turnout.

Perfect Jeff, you'll have your dyno ready for 2019, hope you can make it out this year!!

[Al Fernandez]

I'm in if the car is running by then lol

[Pranav]

I'm in

[blk96gt]

Another TT guy wants to join. Is that alright with everyone?

[drecords]

Current List:

Daniel
Jeff
Pranav
Champ
Champ's +1
Champ's +2
Al (maybe)

7 is a quorum -- I'll call Chris tomorrow and get it set up & update with success/failure here. Plan on making minimal changes on the dyno -- usually a minor timing adjustment or something is OK, but troubleshooting even a minor issue can burn serious time. (Ask me how I know). :D

If the TT guys don't have a mustang or a camaro -- have them research specifics around dynoing there car. Off the top of my head is how to get an RPM signal, and if there is any fancy traction control that needs to be defeated to get the computer to let him pull it. Also, if they need certain HP points on the graph, have them bring their spreadsheet ready for him to fill out.

Daniel

[blk96gt]

Ones in a c7 and the other a BRZ. Both have dynod before so they know the procedure.

[Fbody383]

The 15 car needs numbers... call us a maybe.

[drecords]

Chris' can do it the 12th. Let me know if that works for y'all!

Daniel

[Tilton]

I can still make it.

[Al Fernandez]

Sure

[Pranav]

I am 50/50

I have still have to fix my clutch hose and fan wiring, but not sure how long it will take for them to fix my truck this week.

[drecords]

All set for Saturday. Plan on being ready to go on the Dyno ~830. They open up at 8 and will need some time to prep, move cars, etc. See y'all Saturday!

[Tilton]

How much? Cash/Credit?

[drecords]

How much? Cash/Credit?

$75 for 3 pulls. They take cash or card

[Sook]

I have to make restrictors, but I should make it.

Does anyone know what size restrictor orifice range I should target?

- Josh

[Tilton]

50mm - 56mm in 2mm increments?

How are you making them?

[Sook]

50mm - 56mm in 2mm increments?

How are you making them?

Water jet I hope, have to find a shop with availability in the next day or two. Other wise by hand. That gives me a good ballpark to shoot for.

- Josh

[Tilton]

If you can find someone to cut them, I'll take a 56mm. :)

[mach1]

I have to make restrictors, but I should make it.

Does anyone know what size restrictor orifice range I should target?

- Josh

Ford you say?? Uhh 22-28mm :-D

[Tilton]

I’m out. The car has a serious hot start issue.

I drove to get fresh gas with no issue. Get back home and park it in the driveway. I had to wait a while for the car to start so I could pull it back into the garage. Once in the garage it failed to start again. F me.

[64GunPilot]

I’m out. The car has a serious hot start issue.

I drove to get fresh gas with no issue. Get back home and park it in the driveway. I had to wait a while for the car to start so I could pull it back into the garage. Once in the garage it failed to start again. F me.

Not sure what platform you are running, but on my car and I've seen this on other cars too....the Engine Temp Sensor wiring is rerouted to a switch on the dash. The driver can break the continuity to the sensor by opening the switch. The PCM will then richen the mixture for starting and allow for easier warm starts. Then after the engine is started, close the switch and the PCM will now read the temp sensor properly. Maybe not applicable to you, but hope it helps.

[Al Fernandez]

I'm out...car aint finished and I should use the time to change that.

[RichardP]

the Engine Temp Sensor wiring is rerouted to a switch on the dash. The driver can break the continuity to the sensor by opening the switch. The PCM will then richen the mixture for starting and allow for easier warm starts. Then after the engine is started, close the switch and the PCM will now read the temp sensor properly.

This is cool. You can also switch it on the dyno to dump a few horsepower.

Might want to be careful with switches on the dash that could be used to affect power even if there is no ill intent...


Richard P.

[64GunPilot]

I didnt think of that. This was already setup on the CMC car I just bought.

[Supercharged111]

I didnt think of that. This was already setup on the CMC car I just bought.

Not surprising. Mine had some cheater shit I had to undo too.

[drecords]

Those that didn't make it missed a good time. Looking forward to MSR-H!

[64GunPilot]

Not surprising. Mine had some cheater shit I had to undo too.

Maybe the switch position could be documented in the remarks on the dyno sheet? IDK. Seems silly but then again, while I have read all of the rules and most of them make sense, I havent been in your guy's shoes and witnessed and experienced all the cheats.

[Supercharged111]

Annotating that on the dyno sheet would be great, except that it can be flipped during the race and put back after the checker. Not saying you would and nobody is gonna bug you about it when you're starting out, but it is something to keep in mind when you start finding some speed.

[39PitCrew]

Not sure what platform you are running, but on my car and I've seen this on other cars too....the Engine Temp Sensor wiring is rerouted to a switch on the dash. The driver can break the continuity to the sensor by opening the switch. The PCM will then richen the mixture for starting and allow for easier warm starts. Then after the engine is started, close the switch and the PCM will now read the temp sensor properly. Maybe not applicable to you, but hope it helps.

Ask David (#39 Fbody383) or Sean (#15 Stormtrooper) what happened when the
temp sender in the water pump developed an intermittent open at MSRH. The computer
was baffled.

[Al Fernandez]

So, everyone got the numbers they were looking for? No drama?

[blk96gt]

Other than Crumpacker having a cheater engine that makes 267 everyone was spot on. I pulled pretty much the same numbers I did a year ago and averaged at 259.

[Sook]

I pulled 259.7 average with a 52mm restrictor on the ol' 5.0.

- Josh

[mach1]

I pulled 259.7 average with a 52mm restrictor on the ol' 5.0.

- Josh
freakin A!

[Al Fernandez]

Cool cool

[Sook]

freakin A!

All I can attribute it to is an excellent engine builder. The dyno operators make me sign more forms than everyone else when it goes on the dyno though.

- Josh

[mach1]

All I can attribute it to is an excellent engine builder. The dyno operators make me sign more forms than everyone else when it goes on the dyno though.

- Josh

Build em loose and fast! I've built around 15 motors now, none have made that sound except that one, at least it runs good!
Fun Fact, I had City Motor Supply recondition stock rods and put ARP bolts in them, got em back to build the motor and the OE big ends were within .0003 of spec, the remans were .002 over/under, they wouldn't have lasted more than a few mins if I put them in w/o checking.
Fortunately I had that extra set of OE rods, that's what's in the motor now, with stock rod bolts even.

[Pranav]

Myself and my builder haven't been a fan of resizing oem GM rods for ARPs as it's yet another place for margin of error, and no one really knows of stock rods are safe to resize that much. I mean you're taking away metal for a more "robust" fastener.

For our RPM/power levels I think it makes more sense to just buy two sets of oem rod bolts: one to check/set clearance and one for final assembly.

Once you're at the stage where you feel like you need ARPs for rods, time for better rods that were made to take them without modification.

[Al Fernandez]

Geez Tyler
At my current level of consumption, it'd take just under 200yrs before I'd build 15 motors...

[Pranav]

All it would only take me 15!

[Sook]

All it would only take me 15!

Damn, I felt that one through the internet.

- Josh