Well, I drove it...
- Thread starter Bort62
- Start date
If you're going with EFI and you have enough persistence... With megasquirt I know it's possible to run as flex fuel. Maybe with an electronic boost controller, you could program so that your engine would automatically change the boost level for the amount of E85 in your fuel, 
since the program has already begun to make changes for the fuel type it should be able to make other changes right?
I'm just taking a guess here, i'm not totally familiar with megasquirt yet, just seems like a really cool idea, and I really want to build my next engine with EFI. Not to mention, if your turbo has enough extra capacity it could run E85 or a mixture of it and gas at an optimum cylinder pressure, making your car a true flex fuel machine.
Food for thought,
Allan
since the program has already begun to make changes for the fuel type it should be able to make other changes right?I'm just taking a guess here, i'm not totally familiar with megasquirt yet, just seems like a really cool idea, and I really want to build my next engine with EFI. Not to mention, if your turbo has enough extra capacity it could run E85 or a mixture of it and gas at an optimum cylinder pressure, making your car a true flex fuel machine.
Food for thought,
Allan
It's an interesting idea... but if I were to run E85 (or 100LL) I would probably just turn up the boost manually. I don't know how capable the MS is in terms of automagically dealing with this. I could easily have a tune for each, however.
One downside of leaving my job on the airport... no more easy access to 100LL (not that I ever had cause to use it, until now).
I most definately am going with EFI however. But I think that now that I have this mo$tly running okay (as in, it's all tuning from here, not money) that I am going to focus on some other area's of the car before taking that plunge.
And, while Tempo TBI is easy, I am contemplating waiting for the AL Head and going strait to MPFI. I am concerned that I will be fuel limited with a single injector in the tempo TBI. CFI or GM TBI is a possibility too, I guess... but I am just more of a MPFI fan at the end of the day.
And the marginal cost of a fuel rail and set of injectors is not that high - and that's the fundamental difference.
One downside of leaving my job on the airport... no more easy access to 100LL (not that I ever had cause to use it, until now).
I most definately am going with EFI however. But I think that now that I have this mo$tly running okay (as in, it's all tuning from here, not money) that I am going to focus on some other area's of the car before taking that plunge.
And, while Tempo TBI is easy, I am contemplating waiting for the AL Head and going strait to MPFI. I am concerned that I will be fuel limited with a single injector in the tempo TBI. CFI or GM TBI is a possibility too, I guess... but I am just more of a MPFI fan at the end of the day.
And the marginal cost of a fuel rail and set of injectors is not that high - and that's the fundamental difference.
Well, it was just an idea, but the reason you would have the computer control the boost gauge is in the case that you mix gasoline and E85. You don't know what the mixture is cause you just toped off the gasoline tank with E85. So the computer automatically controls boost and mixture for the incoming octane of fuel. 8)
Or if you're really crazy, you could get two gas tanks and go the Super Sleeper Nova route. Fill one with race gas and the other with pump gas, and let the computer decide the gas mix for the HP needs of the throttle position.
Allan
Here I go again, over thinking things.
Or if you're really crazy, you could get two gas tanks and go the Super Sleeper Nova route. Fill one with race gas and the other with pump gas, and let the computer decide the gas mix for the HP needs of the throttle position.
Allan
Here I go again, over thinking things.
Alvor315":gvv13kg3 said:Well, it was just an idea, but the reason you would have the computer control the boost gauge is in the case that you mix gasoline and E85. You don't know what the mixture is cause you just toped off the gasoline tank with E85. So the computer automatically controls boost and mixture for the incoming octane of fuel. 8)
Or if you're really crazy, you could get two gas tanks and go the Super Sleeper Nova route. Fill one with race gas and the other with pump gas, and let the computer decide the gas mix for the HP needs of the throttle position.
Allan
Here I go again, over thinking things.
The two tanks thing isn't that crazy of an idea... a 5gal for 100LL and the stocker for 91 (or even 87)
Uh oh, "not that crazy." 
I think I might have a partner in crime. 
If you want to take a look at what they did to the Nova you can go here
--> http://www.w2wpowertrain.com/t-novabuild-2.aspx.
Lots of pictures too.
Allan
I think I might have a partner in crime. If you want to take a look at what they did to the Nova you can go here
--> http://www.w2wpowertrain.com/t-novabuild-2.aspx.
Lots of pictures too.
Allan
Thats one way...
I don't think I am quite to that point.
Right now i've got a stock '95 camaro fuel tank installed. Truth is, I am not very happy with how it fits. Now I am looking at re-installing the stock tank and using an external pump.
I suppose somewhere down the line it might make sense to put in a 4 or 5 gallon cell for use of race gas, but for what I am doing right now, I can just put a few gallons in when I go to the track, if I want to crank up the boost.
I've got so many nagging little things with the car right now that none of that is really on the horizon. I have sort of clapped it all together to make sure it all works... now I need to go through it all again and fix all the little annoying stuff that will keep it from being a driver. As of right now, it's longest single trip has been about 2 miles.
Once I get the manual boost controller figured out, I am going to button up all the details (like getting more hangers on my exhaust and swapping in a non-leaking oil pan) and then drive the pee out of it.
I will run the boost up as high as I can on 91 octane, and see how it does. Unfortunately, this time of year the tracks are all closed - and there aren't even any that are remotely close to either SF or Mojave. Once I do get it driving right, Ill put it on a chassis dyno and take a look at where I am.
I don't think I am quite to that point.
Right now i've got a stock '95 camaro fuel tank installed. Truth is, I am not very happy with how it fits. Now I am looking at re-installing the stock tank and using an external pump.
I suppose somewhere down the line it might make sense to put in a 4 or 5 gallon cell for use of race gas, but for what I am doing right now, I can just put a few gallons in when I go to the track, if I want to crank up the boost.
I've got so many nagging little things with the car right now that none of that is really on the horizon. I have sort of clapped it all together to make sure it all works... now I need to go through it all again and fix all the little annoying stuff that will keep it from being a driver. As of right now, it's longest single trip has been about 2 miles.
Once I get the manual boost controller figured out, I am going to button up all the details (like getting more hangers on my exhaust and swapping in a non-leaking oil pan) and then drive the pee out of it.
I will run the boost up as high as I can on 91 octane, and see how it does. Unfortunately, this time of year the tracks are all closed - and there aren't even any that are remotely close to either SF or Mojave. Once I do get it driving right, Ill put it on a chassis dyno and take a look at where I am.
Something else I've noticed is that under boost I am getting some fairly hardcore blowby out the crankcase breather (which i've left open for now).
I do run PCV off the back of the VC, but under boost that is sealed off.
Im not sure if this means i've got ring issues, or if this is just normal. What I am contemplating doing is capping this off and running a line down either before the turbo inlet, or perhaps into the exhaust. The only problem I can see with sucking it back through the intake is that it will contain a little oil, and will lower the net octane of the fuel being combusted.
Recommendations?
I do run PCV off the back of the VC, but under boost that is sealed off.
Im not sure if this means i've got ring issues, or if this is just normal. What I am contemplating doing is capping this off and running a line down either before the turbo inlet, or perhaps into the exhaust. The only problem I can see with sucking it back through the intake is that it will contain a little oil, and will lower the net octane of the fuel being combusted.
Recommendations?
Well, I built the boost controller as described. Seems to work fine... but I havent really been able to experiment with it much because the crack in my block started leaking again.
@!#$#@%$#$%
I am going to put the cooling system under vacuum and try to suck some JB weld into the crack. Peeving me off.
@!#$#@%$#$%
I am going to put the cooling system under vacuum and try to suck some JB weld into the crack. Peeving me off.
Alright, that seems to be fixed, for now. I also swapped oil pans (thanks Grocery getter) and don't seem to have anymore oil leaks.
But, on the downside, it seems that my boost controller is somewhat sporadic. Sometimes it works, but sometimes it seems to stick at which point it allows the boost to shoot up. I've put it over 10 psi a few times, which makes me nervous.
So, that's an issue for another day. It's odd because sometimes it kicks in, and you can feel the wastegate open to bleed off pressure... you can hear the turbo spool down too. (and the power fall off along with that)
I set my timing to 15* initial, and 25* total... and that seems to be o-k. I get a little bit of ping at the top end, so I may need to pull the boost back just a little more. I will be picking up an intercooler soon so hopefully that will help with that.
It's making a new noise now, that I am not quite sure what to blame. It almost sounds/feels like something in the drive train, but I really don't know. It started once I put the boost controller on, but I can't think of any way to correlate it with that. It's sort of a dull roar/grinding sound when I dig into it. It might just be the turbo sucking air - I can't tell. Now that I think about it, it could be the turbo itself. It's still an un-rebuilt 25$ ebay special. The shaft could easily be enough out of balance to cause what I am hearing. hmmm....
So now into the tuning. I guess I need to get my wideband O2 or else I am just pissing in the wind.
Does anyone know if the YF uses standard carter jets ?
But, on the downside, it seems that my boost controller is somewhat sporadic. Sometimes it works, but sometimes it seems to stick at which point it allows the boost to shoot up. I've put it over 10 psi a few times, which makes me nervous.
So, that's an issue for another day. It's odd because sometimes it kicks in, and you can feel the wastegate open to bleed off pressure... you can hear the turbo spool down too. (and the power fall off along with that)
I set my timing to 15* initial, and 25* total... and that seems to be o-k. I get a little bit of ping at the top end, so I may need to pull the boost back just a little more. I will be picking up an intercooler soon so hopefully that will help with that.
It's making a new noise now, that I am not quite sure what to blame. It almost sounds/feels like something in the drive train, but I really don't know. It started once I put the boost controller on, but I can't think of any way to correlate it with that. It's sort of a dull roar/grinding sound when I dig into it. It might just be the turbo sucking air - I can't tell. Now that I think about it, it could be the turbo itself. It's still an un-rebuilt 25$ ebay special. The shaft could easily be enough out of balance to cause what I am hearing. hmmm....
So now into the tuning. I guess I need to get my wideband O2 or else I am just pissing in the wind.
Does anyone know if the YF uses standard carter jets ?
Well, I am sure everyone is sick of hearing me talk - but I figure I will keep updating this for posterity (and future searchers).
Got out and drove it in the daytime today, which is a nice change. It seems to be running o-k, but I am having trouble maintaining a cruise.
It's fine until I get out on the highway - but then, the only way I can maintain a cruise at like 2500 + rpm (no speedo, but around 60 mph) is by digging my foot in enough that I get like 4-7 psi.
Cruising along @ 7psi can't really be good for anything, especially gas mileage.
Now, this motor ran fine at that speed pre-turbo. What it feels like is that it is just WAY down on power up at the top end. Sorta like the timing is way off. I double checked the timing however and it's at 15* initial 25* total, all in by that rpm (not sure exactly where the centrifugal comes in, as I don't have a tach in the engine bay
)
So, I guess it could be fuel - that make sense to anyone? Going lean on top causing it to be down on power, requiring me to give it more loudpedal to keep up (and henceforth, bringing on the boost? )
I still have the stock Jet in my '77 or so YF carb, so I guess it's possible... but I would think it could handle N/A cruise.
Got out and drove it in the daytime today, which is a nice change. It seems to be running o-k, but I am having trouble maintaining a cruise.
It's fine until I get out on the highway - but then, the only way I can maintain a cruise at like 2500 + rpm (no speedo, but around 60 mph) is by digging my foot in enough that I get like 4-7 psi.
Cruising along @ 7psi can't really be good for anything, especially gas mileage.
Now, this motor ran fine at that speed pre-turbo. What it feels like is that it is just WAY down on power up at the top end. Sorta like the timing is way off. I double checked the timing however and it's at 15* initial 25* total, all in by that rpm (not sure exactly where the centrifugal comes in, as I don't have a tach in the engine bay
)So, I guess it could be fuel - that make sense to anyone? Going lean on top causing it to be down on power, requiring me to give it more loudpedal to keep up (and henceforth, bringing on the boost? )
I still have the stock Jet in my '77 or so YF carb, so I guess it's possible... but I would think it could handle N/A cruise.
grocery getter
Famous Member
keep talking, as long as you're doing
without the wideband info. i'm thinking it could be your turbo is a restriction, causing the poor performance( acts like a plugged cat. converter)
could the turbo have tightened up on ya' ?
without the wideband info. i'm thinking it could be your turbo is a restriction, causing the poor performance( acts like a plugged cat. converter)
could the turbo have tightened up on ya' ?
I don't think that is it, because basically it did this before the turbo ever went on. I checked the turbo, and it seems to spin fine.
I think it's just the fact that a stock 200 w/ 3.89 gears and 25" tires is just about out of breath @ 3000 rpm, and it takes a lot of pedal to keep it there. IE, it's a low vacuum situation. Low Vacuum while NA = boost when turbo'ed.
So I dunno. I went and took it on a several mile cruise and it ran fine.
I think it's just the fact that a stock 200 w/ 3.89 gears and 25" tires is just about out of breath @ 3000 rpm, and it takes a lot of pedal to keep it there. IE, it's a low vacuum situation. Low Vacuum while NA = boost when turbo'ed.
So I dunno. I went and took it on a several mile cruise and it ran fine.
3.89 gears? Yow, that's wrapped pretty tightly.Bort62":3unc4nny said:
The Buick turbo V6 boys almost never go above a 3.42 with 26-28 inch tires. They say that the turbo likes to have something to "push" against, and deep gearing works against them. (not that I've ever owned a turbo car myself)
Alright, brief update.
I installed a 3" inlet/outlet intercooler w/ a 17.5 x 12" core. It's a pretty huge intercooler, it blocks off nearly my entire radiator (which was pretty huge to begin with).
After installing it, I couldn't get it to run for shit. Turns out, after much lamenting and experimenting, that I was running pretty lean.
Theory is, installing the IC dropped the temperature of the intake air so much (turbo side of IC is very hot to the touch, carb side is ambient air) that it pushed the A/F past the capacity of the stock YF jet I still had in.
So I pulled that out, and measured it to be ~ .095. I had ordered some edlebrock AFB jet's on a whim, and it turns out they are identical. I took one of those, and drilled it out to first .104 and then .115. It ran better each time. I also cranked the adjustment screw for the metering rod to the max (which helped a lot even w/ the stock jet). I really need to get my innovate.
Runs much better now! I am still at sub 5 psi boost, but I am going to set about making my wastegate adjustable. I also got given an OLD spearco WI setup that didn't have any instructions, but I put it on the electronics test bench here at work and figured out how to make it work
It provides progressively higher flow w/ rpm. Pretty neat. A little more complicated than the DIY style.
At anyrate, just wanted to get that information down. And w/ this mondo IC on the front of the car - secrets out... It is fairly obviously turbocharged My grill won't fit anymore...
I installed a 3" inlet/outlet intercooler w/ a 17.5 x 12" core. It's a pretty huge intercooler, it blocks off nearly my entire radiator (which was pretty huge to begin with).
After installing it, I couldn't get it to run for shit. Turns out, after much lamenting and experimenting, that I was running pretty lean.
Theory is, installing the IC dropped the temperature of the intake air so much (turbo side of IC is very hot to the touch, carb side is ambient air) that it pushed the A/F past the capacity of the stock YF jet I still had in.
So I pulled that out, and measured it to be ~ .095. I had ordered some edlebrock AFB jet's on a whim, and it turns out they are identical. I took one of those, and drilled it out to first .104 and then .115. It ran better each time. I also cranked the adjustment screw for the metering rod to the max (which helped a lot even w/ the stock jet). I really need to get my innovate.
Runs much better now! I am still at sub 5 psi boost, but I am going to set about making my wastegate adjustable. I also got given an OLD spearco WI setup that didn't have any instructions, but I put it on the electronics test bench here at work and figured out how to make it work
It provides progressively higher flow w/ rpm. Pretty neat. A little more complicated than the DIY style. At anyrate, just wanted to get that information down. And w/ this mondo IC on the front of the car - secrets out... It is fairly obviously turbocharged
My grill won't fit anymore...So I installed the WI kit. It seems to make the engine run smoother of all things at high rpm. It comes on @ 2000 rpm & 5 psi of boost. I used a .023" orifice as my injection nozzle. Not the greatest for atomization but it's ok. I'm not sure how much water I am actually spraying, but I will leave it like this for a while.
Was pretty simple to install. Nice to have a kit.
Car runs REAL good now. I just need to modify my wastegate so I can crank up the boost.
Was pretty simple to install. Nice to have a kit.
Car runs REAL good now. I just need to modify my wastegate so I can crank up the boost.
