Had a good day at the dyno today

[turbobitt]

Took the car today to Otto's dyno to get things dailed in. First let me say that this was worth the trip and cost to do this. We worked through a bunch of small issues that would have been a nightmare at the track. Most important to me is that I was able to take the car home is good running condition witout any blow-ups.
After progressively stepping up the boost, we started to find that the 11 year old Aeromotive pump with 3000+ street miles couldn't handle the fuel demand. We found this because we had a pressure transducer tapped in for data logging. Another expense worth doing. We were also data logging exhaust back pressure, Hot boost pressure before the intercooler, and exhaust EGT's. Could not get the turbo speed sensor to work for this dyno session.

So, with the week fuel pump, we were only able to bring it up to 26 pounds boost and get about 840 hp out of it. So far, I'm very happy with the results and look forward to bringing it back after replacing the pump and a few other fixes. My final goal is to get 1000 HP and hope to get there at or below 35 pounds boost. If Otto wants to chime in then he can do so but I think this is achievable.

Keep in mind that this is still a mostly street driven car and not a max-effort class racing car. When I put this together, durability was my priority over max power. Valve spring, cam and turbo selection were made based on these goals.

Most of the basic combo didn't change much from what I been running over the last 10 years.
272 stage 2 with stage 2 heads(Same heads with more spring)
Solid roller cam(same as old combo)
Y2K 88 turbo(New to this combo)
Sheet metal intake(New to this combo)
V1 intercooler(New to this combo)
TH400 trans.

Allan G.

 

[XXQUICK6XX]

Congrats Allen, just keep plucking away at it.

Steve

 

[bison]

Just getting it to the point where it starts picking up a lot of power as the boost gets cranked up. Should hit 1000whp at 31psi and 1100@35psi. 1000whp should be doable without adding any external source of pressure to the wastegate. This engine has a longer duration low lift cam and doesnt require a lot of spring pressure to keep the valves closing. It will be interesting to see what happens with the back pressure when the power gets turned up. Currently its under 1.2:1. Lots of room to crank it up and pick up a lot of power. It should also be noted that Allan did about every bit of this combo including assembly of this engine and clearance recs. He is still running the stock coil pack and the engine has a relatively low CR for his type of build.

 

[turbobitt]

Thanks for the complements Brian. It's good to be around positive influences and good people while building this project.

Edit: Wish you could have been around instead of working. When I bring it up after the fuel pump change, you will have to make it a point to be there.

Allan G.

 

[TR Custom Parts]

Way to go Allan! So you have it all back together body and paint wise? This car is a beast folks and have seen it on the street plenty of times.

 

[norbs]

CONGRATS! Anyway to get a datalog of the run and those cam specs? Especially interested in duty cycle and iat temps and bp


THanks norb

 

[turbobitt]

Way to go Allan! So you have it all back together body and paint wise? This car is a beast folks and have seen it on the street plenty of times.

Mark,
Car is still a rolling shell. No paint yet. Thought it was a good time to dyno since the engine is easy access with no front end. Also waiting for paint booth to free up.

Also, thanks to some of your great products. Your fans and pulleys worked perfectly during our dyno pulls.

Allan G.

 

[turbobitt]

CONGRATS! Anyway to get a datalog of the run and those cam specs? Especially interested in duty cycle and iat temps and bp


THanks norb

Norbs,
I don't have the data logs. This was Otto's tune so he has the info. From what I remember, the IAT started out at 99 degrees and went down to about 91 during the pull. Not much pressure drop accross the intercooler. Don't remember the number though.
Allan G.