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-   -   Big problem with my power dyno numbers (https://www.lateral-g.net/forums/showthread.php?t=10701)

camcojb 08-14-2007 09:49 AM

do not underestimate the power loss of no timing. Have them switch it over to the 104 fuel and put the 28 degrees in with no retard. Then you'll know where you could be with water injection. As a matter of fact, I can't believe you cannot run 30-32 degrees with that boost level and 104 octane gas.

Jody

Steve Chryssos 08-14-2007 09:51 AM

Quote:

Originally Posted by mazspeed
....I have no idea what to do at this point.

Get Jody to put on his cape & tights and fly over.

mazspeed 08-14-2007 10:00 AM

Quote:

Originally Posted by camcojb
do not underestimate the power loss of no timing. Have them switch it over to the 104 fuel and put the 28 degrees in with no retard. Then you'll know where you could be with water injection. As a matter of fact, I can't believe you cannot run 30-32 degrees with that boost level and 104 octane gas.

Jody

Hey Jody. I'm aware of the fast burn heads not needing as much timing as other setups, but I do not know if this is also the case with a boosted setup. Ill ask them to do that today.

mazspeed 08-14-2007 10:01 AM

Quote:

Originally Posted by streetfytr68
Get Jody to put on his cape & tights and fly over.

I wish.

Blown353 08-14-2007 10:11 AM

Hell, I'd drive over there today if I wasn't stuck here at work. I'm only about 85 miles away from Campbell and Jody's only about another 15 miles further than me.

He would have to ride in the trunk though if he was wearing a cape and tights. :lol:

mazspeed 08-14-2007 10:15 AM

Quote:

Originally Posted by Blown353
Hell, I'd drive over there today if I wasn't stuck here at work. I'm only about 85 miles away from Campbell and Jody's only about another 15 miles further than me.

He would have to ride in the trunk though if he was wearing a cape and tights. :lol:

heheh :lol:

I think though that I'm just going to sell it and get out of the car game. It has been really bugging me to the point of where I cannot sleep at night, and I have a family and a company to run and I just cannot deal with this car anymore.

Steve Chryssos 08-14-2007 10:18 AM

Quote:

Originally Posted by mazspeed
I agree with the knob, but I do have fast burn heads. Do you think that the fast burn heads require less timing under boost? I heard that they do under N/A.

Don't get distracted, your heads are fine. Fast-burn simply means kidney bean shaped chamber as opposed to old school open style. The shape helps move the combustion process towards the spark plug and then exhaust valve, thereby aiding, or speeding up, the process of moving the mixture in, burning it, and pushing it out. So the logic is reversed: Fast burn heads can accomplish the same goals with less timing. Doesn't mean they can't tolerate timing.

Mike,
Sounds like you have some real good help in your neck of the woods. Focus on problems associated with your blower install. Collect your data and get with ProCharger and the Carb Shop.

67SuperSnake 08-14-2007 10:51 AM

I realize I have a totally different motor (427FE, Fast EFI, etc), but 15 degrees timing is very low. I am running 38 degrees, 10lbs boost, EFI backs out 1 degree for every pound of boost. Using Diamond blower pistons. NGK BKR6ES (I think this is the same plug I am using, but for sure a 6).

Remember that engines are just big air pumps. Everything you have in the way of intake or exhaust restrictions can and will affect it to some degree. I know a guy who has an engine dyno in his garage and does a lot of testing on S/C. He just changed the hat from a lower type to a well round type and gained 100hp.

Similar to this one:

http://www.stevemorrisracingengines....carb-hat-1.jpg

rich-allen 08-14-2007 11:40 AM

Quote:

Originally Posted by mazspeed
heheh :lol:

I think though that I'm just going to sell it and get out of the car game. It has been really bugging me to the point of where I cannot sleep at night, and I have a family and a company to run and I just cannot deal with this car anymore.

Oh dammit man!!! Don't give up on her yet. Obviously you have a lot of time and money into this project, hell just look at the website you built with all those pictures!

You probably can't sleep because you love that car and you want it to perform like you dreamed of it performing the entire time.. If your seriously at the point of throwing in the towel, put it on a trailer and send it to someone who can tune it properly. When it's finished have them send it back.

Rich

TOM NELSON 08-14-2007 12:22 PM

15 degrees
 
15 degrees of timing not only is it not enough it's not safe it will hold to much heat and want to pop the head gaskets.From 15 degrees to a very safe 32 degrees with gas you will ****tttt yourself on the difference.Give it a try.Disconnect the boost retard completely set the total timing to 32 degrees look at the light yourself so you no for sure its there .to be sure make sure the motor is at 3500 to 4000 rpm when your setting the timing and if you have vac advance unplug it when setting.Pour some high test over 100 octane and let it rip.The fast burn head gives you a advantage of being able to run more timing if wanted.This motor on 91 should easily be able to run 30 degrees safely at 8.5 to 1 at 9 pounds.You would freak out if you saw a timing curve i run at 38 psi.Ive run as much as 40 it all depends on the motor but 15 not enough.I think weve all been where your at one time or another.When i first started making turbo engines i listened to all the turbo experts and built probally 6 different engines and burned 100's of gallons of racing fuel to only make 600hp with a tt sbc.I just about threw in the towel.It sucks but you will get it the parts are there and 500ft to the tire should be no problem at all.try the timing first.If no improvement compression it.If you like feel free to call me Have a good one Tom


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