Dyno disappointments HELP!!!
#21
TECH Fanatic
iTrader: (1)
I am really worried about doing this myself as well. I was told some water will do the same thing. Minus puting it in the gas tank of course... and don't let it die. Takes two to do it I was told. I'd like to see more about this. I will search and see what I find. GL OP.
#22
TECH Fanatic
iTrader: (19)
Join Date: Sep 2007
Location: houston TX
Posts: 1,497
Likes: 0
Received 0 Likes
on
0 Posts
^^^dont use water, and dont use anything like this on a Northstar motor, the valves of the northstars dont like it. youll be fine with the ls1's though.
also, the longer you let it sit after you bog it to kill it, the better. if you can let it sit like that overnight that would be best. gives the seafoam longer to break down the buildup.
also, the longer you let it sit after you bog it to kill it, the better. if you can let it sit like that overnight that would be best. gives the seafoam longer to break down the buildup.
#23
I am really worried about doing this myself as well. I was told some water will do the same thing. Minus puting it in the gas tank of course... and don't let it die. Takes two to do it I was told. I'd like to see more about this. I will search and see what I find. GL OP.
#24
#25
Here's the Link https://ls1tech.com/forums/general-m...-your-car.html
#26
TECH Fanatic
iTrader: (19)
Join Date: Sep 2007
Location: houston TX
Posts: 1,497
Likes: 0
Received 0 Likes
on
0 Posts
back in the day people used to put a quart of ATF in the crank case and do the same thing, these new motors dont like that though, it tears up the bearings. which is why we use seafoam now.
#28
TECH Fanatic
iTrader: (19)
Join Date: Sep 2007
Location: houston TX
Posts: 1,497
Likes: 0
Received 0 Likes
on
0 Posts
remember motor oil is designed to stick to stuff, especially the internals of an engine. add in a few hundred degrees, a crankshaft spinning a minimum of 15 times a second or as fast as over 100 rps ( 3000 rp minute is 50 rp second, do the math) , the oil pump pressures, the fact that its dripping down from all over and well, sludge.
also theres burnt oil in there. the bottom ring on a piston has nothing to do with holding compression, its there to keep the oil out of the combustion chamber. so when it starts to ware and oil starts to burn......
#29
they all do it, its really just the time, heat, pressure, etc. It also doesnt help that always, no matter what, there will be some blow-by, so theres going to be gasoline and exhaust in the mix too. the blow-by increases with milage and time so the build up gets faster.
remember motor oil is designed to stick to stuff, especially the internals of an engine. add in a few hundred degrees, a crankshaft spinning a minimum of 15 times a second or as fast as over 100 rps ( 3000 rp minute is 50 rp second, do the math) , the oil pump pressures, the fact that its dripping down from all over and well, sludge.
also theres burnt oil in there. the bottom ring on a piston has nothing to do with holding compression, its there to keep the oil out of the combustion chamber. so when it starts to ware and oil starts to burn......
remember motor oil is designed to stick to stuff, especially the internals of an engine. add in a few hundred degrees, a crankshaft spinning a minimum of 15 times a second or as fast as over 100 rps ( 3000 rp minute is 50 rp second, do the math) , the oil pump pressures, the fact that its dripping down from all over and well, sludge.
also theres burnt oil in there. the bottom ring on a piston has nothing to do with holding compression, its there to keep the oil out of the combustion chamber. so when it starts to ware and oil starts to burn......
Ive built fox bodies for the last 11 years, and Ive never seen them do that. Then my brother bought a LT1 in 05 it had carbon really bad on the maf and tb. Then I bought my car, and it had did the same thing. I just cleaned it off, but I know its got to be built up in the motor. Oh I dropped my pro stars off yesterday, to have the gloss black powder coated. There gonna look sick.
#30
Internet Mechanic
iTrader: (17)
Ok well I went to a dyno day at JKS performance here in mansfield tx. I was curious as to what my car is putting down to the ground. Mod list is ported maf ported tb, slp box free ram air mod, mid lengths, off road y pipe and a borla muffler. The car was smoking black and grey smoke like crazy on the upper rpms, and a little bit on the lower. Its running way to rich. and only put down 267 hp and 293 tq Its a auto, and I was on a mustang dyno. Does that sound right, or is my car a **** turd? Does it need a tune, just for those mods? and would it benefit me at this time?
- Automatics are not Dyno Queens (at very least compare to other A4 stock stalled cars)
- 1998 cars tend not to dyno high due to PCM and intake, even though the cam is slightly bigger but due to the CAT design and tune, tends to make less power
- Any car that removes the CATS will set a MIL or SES light and the tune can be adjusted. Often a car should be running lean, you should be seeing knock retard
- Mustang dynos lower due to certain parameters that are inputted and some are assumed and ultimately if done correctly can be more accurate then a dynojet but often are not due to again, assumptions.
- Every A4 98 car I have seen does not out the power on par with a 01-2002, the LS6 intake does factor in but we had a car locally, put on headers, LM1 exhaust, lS6 intake, lid, on a 10 bolt w/ dyno tune make 315 rwhp. Sadly my 2002 M6 car with a lid only makes 324 and when headers added made over 350. The auto vs manual diff will matter but alot of it has to do with the pcm and cyl head design.
IMO you need to tune the car see what it makes.
#31
TECH Fanatic
iTrader: (2)
Join Date: Sep 2007
Location: Cairo, GA
Posts: 1,235
Likes: 0
Received 0 Likes
on
0 Posts
just for a reference, my car made like 295 hp with a full bolt-on m6 untuned(don't know what kind of dyno it was, or what my AF was). after i got a good tune, it bumped it up to 360 uncorrected.
#32
TECH Fanatic
iTrader: (19)
Join Date: Sep 2007
Location: houston TX
Posts: 1,497
Likes: 0
Received 0 Likes
on
0 Posts
Ive built fox bodies for the last 11 years, and Ive never seen them do that. Then my brother bought a LT1 in 05 it had carbon really bad on the maf and tb. Then I bought my car, and it had did the same thing. I just cleaned it off, but I know its got to be built up in the motor. Oh I dropped my pro stars off yesterday, to have the gloss black powder coated. There gonna look sick.
the build up in the intake is from the gasoline, believe it or not a motor will shoot some of the gas that far back up the intake, it has to do with the valves slamming shut and subsuquent pressure wave that travels back through the intake. take the air filter off a carbed motor at night, shine a flashlight across the top and rev the motor, its crazy. the more valve lift and stiffer valve springs and faster the valves shut the worse it gets, so try it on a factory cam motor and a large cam motor, you should see fuel jump a solid 18 inches out of the carb on the cammed motor.
I dunno that it makes it as far as the MAF but thats whats in the TB and intake manifold.
#33
TECH Fanatic
iTrader: (19)
Join Date: Sep 2007
Location: houston TX
Posts: 1,497
Likes: 0
Received 0 Likes
on
0 Posts
oh yeah,
PICS!!!!!
they say when theyd be done? ive seen black ccw's but not prostars, that just sounds cool lol what are you gonna due for the lug nuts and center caps? all black or some crome? think it would be kinda neat to have the Prostars black, center caps black, and leave the lug nuts crome. then again all black is bad ***
they say when theyd be done? ive seen black ccw's but not prostars, that just sounds cool lol what are you gonna due for the lug nuts and center caps? all black or some crome? think it would be kinda neat to have the Prostars black, center caps black, and leave the lug nuts crome. then again all black is bad ***
#34
oh yeah,
PICS!!!!!
they say when theyd be done? ive seen black ccw's but not prostars, that just sounds cool lol what are you gonna due for the lug nuts and center caps? all black or some crome? think it would be kinda neat to have the Prostars black, center caps black, and leave the lug nuts crome. then again all black is bad ***
PICS!!!!!
they say when theyd be done? ive seen black ccw's but not prostars, that just sounds cool lol what are you gonna due for the lug nuts and center caps? all black or some crome? think it would be kinda neat to have the Prostars black, center caps black, and leave the lug nuts crome. then again all black is bad ***
#35
TECH Resident
iTrader: (2)
Join Date: Jul 2002
Location: Richmond, VA
Posts: 885
Likes: 0
Received 0 Likes
on
0 Posts
She is running rich. personally I would swap the maf with a stock one as the stockers work just fine. Sometimes if you mess with them(descreening and porting) it will mess things up.
FWIW, my 98 with a lid, catback, no cats and a basic Frost tune made 300/308 through an A4 in 90 degree heat and right after a thunderstorm.
FWIW, my 98 with a lid, catback, no cats and a basic Frost tune made 300/308 through an A4 in 90 degree heat and right after a thunderstorm.
#36