Its Time To Build Some BOOST!

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srixon4406

srixon4406

TURBO TOAD
Joined
Oct 1, 2010
Messages
1,306
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Location
Clarklake Mich
Well I took the TOAD done the street today for the first time to just run some test and i couldn't resist so i started to lean on it Alittle bit but as soon as I'd start to come. Out of a vacuum state I started to go lean so i had to back out of it but this little six banger has some balls
I really haven't even began to tune this thing yet but I wanted to make sure I was capable of building boost. I'm going to brake out the timing light out in the morning and ill work on getting the carb dailed in
But it's been a couple weeks short of two years and the turbo toad is getting closer and closer to being ready
 
What a cool project. I'd like to try turbo'ing my slant someday. If someone made a bolt-up exhaust and brackets that would go a long way.
 
Glad you got to take it out! I bailed on mine too soon! Hope the new owner gets it going soon. Where is the video? lol....
 
Thanks Bill this is all new to me forced induction and slant six I've been a mopar man since I was 16 and ill be 40 next week and I've had all but one big block.

CUUDAK I hated to see you trade the cuda way but life has a way of pushing us in different directions om sure you'll have a blast with the new ride as for a video ill get one posted in the next couple days it was kind of spur of the moment
 
srixon4406 said:
Thanks Bill this is all new to me forced induction and slant six I've been a mopar man since I was 16 and ill be 40 next week and I've had all but one big block.
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I thought you said you'd be THIRTY next week...:eek:ops:

Don't make it any worse than it already is...
 
BillGrissom said:
What a cool project. I'd like to try turbo'ing my slant someday. If someone made a bolt-up exhaust and brackets that would go a long way.
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Bill, have you seen the picture of the turbo mount that Pishta made? It's a 180-degree, 2.5"-diameter, short-radius U-bend made from mandrell-bent tubing. It has a turbo mounting flange on one end and a flange that will bolt to a stock exhaust manifold on the other.

It redirects the downward exhaust, exiting the manifold, around a corner and up into the turbo scroll intake.

The advantage of that setup is that there's no welding required on the cast iron exhaust manifold. Those exhaust manifolds are prone to cracking and welding on them just makes it more likely that there will be a crack.

It is not appropriate for racing, but should make 300 horsepower possible I would think. Three hundred horsepowerr will move a 3,000-pound A body down the road pretty good. The Wallace online calculator says a ballpark figure would be 12.55 @ 107...

Tht exhaust/turbo setrup would be really easy to build, I would think. All you'd need would be two mounting flanges and a U-Bend of the appropriate size.

Food for thought...
 
I've been making some progress the transmission wasn't shifting fully into 2,3 my shifter cable needed adjustment but the weather wasn't good here today so i couldn't test it out. I did get my timing locked down and im working on fattening my fuel curve some a part throttle. I'm off work on Wednesday and hope to make some progress
Aaron
 
srixon4406 said:
I've been making some progress the transmission wasn't shifting fully into 2,3 my shifter cable needed adjustment but the weather wasn't good here today so i couldn't test it out. I did get my timing locked down and im working on fattening my fuel curve some a part throttle. I'm off work on Wednesday and hope to make some progress
Aaron
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Do you like 18 degrees as a total max on the timing?
 
Bill Dedman said:
Do you like 18 degrees as a total max on the riming?
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Bill so far so good it does crank I tad bit slower then before but it seams to run good. I was talking with a member on org running a blower and he is running around 18° and around 28° with the vacuum advance hooked up to MP not off the carb but he's running close to the numbers what we're looking for.
I haven't had the chance to try it but he says when he's in vacuum state it will run with NA tendency and under load the timing will retard to around 18° I also did some research on this and found alot of info to back this up. I thinks it's definitely worth trying
I'll probably mess with the TOAD today
Aaron
 
I made some minor adjustments to the carb today and adjusted my trans shifter cable and took the TOAD down the street
The carb still isn't right but my afr is getting better still Alittle bit lean coming out of vacuum into boost it built boost fast I seen 15 psi in the blink of a second
I wasn't able to get a full pull my trans still needs some adjustment but im getting close
 
srixon4406 said:
I made some minor adjustments to the carb today and adjusted my trans shifter cable and took the TOAD down the street
The carb still isn't right but my afr is getting better still Alittle bit lean coming out of vacuum into boost it built boost fast I seen 15 psi in the blink of a second
I wasn't able to get a full pull my trans still needs some adjustment but im getting close
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That's great, Aaron!!!

So, what does 15 pounds feel like?? :blob:

Is your waste gate adjusted? We are starting with 5 pounds (chicken sh*ts...) LOL!
 
Bill Dedman said:
That's great, Aaron!!!

So, what does 15 pounds feel like?? :blob:

Is your waste gate adjusted? We are starting with 5 pounds (chicken sh*ts...) LOL!
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Bill it woke me up I wasn't ready for it to build it that fast. Yes my WG is hooked up but i have a 18 psi spring in it and I haven't dialed in my boost controller yet. Like i said it caught me off guard but the car just wanted to pull.
Aaron
 
srixon4406 said:
Bill it woke me up I wasn't ready for it to build it that fast. Yes my WG is hooked up but i have a 18 psi spring in it and I haven't dialed in my boost controller yet. Like i said it caught me off guard but the car just wanted to pull.
Aaron
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Now it begins... LOL!!!:happy1:
 
Bill Dedman said:
Now it begins... LOL!!!:happy1:
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Yah Bill I took my wastegate apart and took one of the springs out so i should be around 7 psi now I also believe I fixed my tachometer I found a broke wire I haven't checked it out ill probably put it back together in the morning and take the TOAD for a spin and see what happens
I'm hoping to get the transmission dailed in but will see
Aaron
 
srixon4406 said:
Yah Bill I took my wastegate apart and took one of the springs out so i should be around 7 psi now I also believe I fixed my tachometer I found a broke wire I haven't checked it out ill probably put it back together in the morning and take the TOAD for a spin and see what happens
I'm hoping to get the transmission dailed in but will see
Aaron
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Well, keep us posted! Gettin' all excited, here!!! :blob:
 
Well its been a minute and the toad had to take a back seat to my winter perp. I recently cleaned my fuel tank and did some minor alterations to my Carb main body and my brpv setup and I'm very excited to tell everyone that I made my first hard pull through all three gears today with rock solid A/F numbers
At idle I'm at 13.8 and coming into boost I'm at 12, and when the brpv start coming on at about 4 psi of boost I'm at 10.5 now this run was only running 7 psi of boost
The car is strong though and pulls hard

I have some leakage on my boost controller that I'm hoping to get squared way in the next couple days the pass I made was being controlled off the wastegate spring tension only
I'm hoping for some more nice days so I can continue with my progress
Maybe ill get some video if things keep progressing in a positive fashion
Aaron
 
srixon4406 said:
Well its been a minute and the toad had to take a back seat to my winter perp. I recently cleaned my fuel tank and did some minor alterations to my Carb main body and my brpv setup and I'm very excited to tell everyone that I made my first hard pull through all three gears today with rock solid A/F numbers
At idle I'm at 13.8 and coming into boost I'm at 12, and when the brpv start coming on at about 4 psi of boost I'm at 10.5 now this run was only running 7 psi of boost
The car is strong though and pulls hard

I have some leakage on my boost controller that I'm hoping to get squared way in the next couple days the pass I made was being controlled off the wastegate spring tension only
I'm hoping for some more nice days so I can continue with my progress
Maybe ill get some video if things keep progressing in a positive fashion
Aaron
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Our A/F ratio meter was showing consistently lean (13-14.5:1) readings under power early this week with 5 pounds of boost, so we took the float bowls off and went up two jet sizes on the primaries and three on the secondaries, and ran out of time for testing. Tomorrow (Friday,) we'll do some more testing and try to police up the head-manifold interface to seal any potential leaks around the gasket in an effort to try to build more boost (5 psi is still all we can generate.)

I'll let you know what happens...:banghead:

Good luck with yours!!!
 
Bill:

You need heat to make power. Once you get the A/F around 12:1 boost will come up. If you can get to 11.7:1 and tune from there you have less chance of roasting a piston.

Consider wrapping that long header to retain some heat. Hot expanding gasses spin the turbine.

B.
 
bohica2xo said:
Bill:

You need heat to make power. Once you get the A/F around 12:1 boost will come up. If you can get to 11.7:1 and tune from there you have less chance of roasting a piston.

Consider wrapping that long header to retain some heat. Hot expanding gasses spin the turbine.

B.
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That's good advice and we'll take it!

As we speak, I am on my way to the shop to "police up" the torque values on all the many manifold studs/nuts/washers to ensure that they are all sufficiently tight so as to minimize any potential leaks, and also we'll evaluate the A/F mixture in an effort to get the mixture sufficiently rich to generate adequate heat at the turbo.

Baby steps, but we'll get it!!

Thanks much for the good advice! If we have to wrap the header, we surely will!

I'll let you know what we learn, tomorrow. We'll do a test-n-tune on the system, tomorrow!
 
Bill what's the latest update

I'll probably do some leakage tests on my co2 operated boost controller in the morning I made a small ball valve fitted with a 4an straight on one end and a quick disconnect air barb on the other that ill plumb into the feed of the controllers solenoid and test it with controlled air and hopefully I should beable to fix any and all leaks then i can slowly start turning up the boost and see what the valiant has
 
srixon4406 said:
Bill what's the latest update

I'll probably do some leakage tests on my co2 operated boost controller in the morning I made a small ball valve fitted with a 4an straight on one end and a quick disconnect air barb on the other that ill plumb into the feed of the controllers solenoid and test it with controlled air and hopefully I should beable to fix any and all leaks then i can slowly start turning up the boost and see what the valiant has
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Tomorrow (Monday) we will take the car out on the freeway, where we can really get into a full-throttle situation and see if what we did accomplished anything. We went 2 steps richer on the primary jets and 3 steps richer on the secondaries. It did show a richer mixture in some preliminary local driving, but we didn't have a chance to crowd it into a full throttle situation, yet. We will, tomorrow.

I also tightened up all of the manifold-to-head stud fasteners (some were not very tight) and will check the BOV setting before we run it again.

This 66mm turbo is brand new, so I don't think it's the problem, as it's identical to the one used on a Buick GN I have ridden in that makes 25 pounds of boost, readily. That Buick V6 is an engine that is virtually identical in size to ours, so I don't think it's a size-mis-match.

I'll let you know what happens, tomorrow.

Good luck with your power valve exercise. We may do a similar setup if yours works well. Ours is already boost referenced, so all we'd have to do is add the CO-2 mechanism. right?

How do you regulate the CO-2 pressure to get the desired amount at the power valve?
 
Bill what size jets are in it now front and back? I have 72 front and 82 rear in mine and im still Alittle bit on the rich side and might trying dropping down some.

As for the co2 issue I think you have mistaking some of our conversation. The co2 is for my electronic boost controller not the CRUTCH SYSTEM. The crutch is for the BRPV's but im using hat pressure for that right now. Not air pressure and the air pressure is controlled off a regulator set at 35 psi.
Now the boost controller is plumbed into the top side of the wastegate and that sees co2 pressure and the bottom port of the WG sees compressor pressure. There is also a increase and decrease solenoids that apply the co2 to the wastegate and its controlled from the controller. I hope I made sense of this for you
Aaron
 
srixon4406 said:
Bill what size jets are in it now front and back? I have 72 front and 82 rear in mine and im still Alittle bit on the rich side and might trying dropping down some.

As for the co2 issue I think you have mistaking some of our conversation. The co2 is for my electronic boost controller not the CRUTCH SYSTEM. The crutch is for the BRPV's but im using hat pressure for that right now. Not air pressure and the air pressure is controlled off a regulator set at 35 psi.
Now the boost controller is plumbed into the top side of the wastegate and that sees co2 pressure and the bottom port of the WG sees compressor pressure. There is also a increase and decrease solenoids that apply the co2 to the wastegate and its controlled from the controller. I hope I made sense of this for you
Aaron
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Yes, I was confusing your boost controller signal with the BOPV signal.

I can't remember the jet sizes, but I wrote them down and will get those numbers for you, tomorrow (Monday afternoon) when I go to work on the car.
 
Bill Dedman said:
Yes, I was confusing your boost controller signal with the BOPV signal.

I can't remember the jet sizes, but I wrote them down and will get those numbers for you, tomorrow (Monday afternoon) when I go to work on the car.
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Sounds good Bill we have been getting some extremely nice days here but I've had to work so much the last couple weeks that i haven't had much time to tune the valiant. I'm hoping for some more nice weather this weekend.
Please keep me updated Bill any way I can help I will
 
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