🔧 BUILD LAME Turbo V6 Camaro

[sktchy]

Do not do that gt45 lol. But yeah your right. Did you have a t3 or t4 flange on your turbine housing? And you want a 3" v band exit? What's currently on it? The t67 clone I have in a box was about as good as it got on my end without getting into big money stuff and if that's somethin your interested in I'd come off of it pretty cheap. If not I'm not mad about having a backup around to play with lol

Also look into forced performance turbos. They're good quality and if you catch a sale right you can get a nice one for just a little bit over what an ebay pile costs. And you sure won't hate yourself when you hear the difference between a good one and a cheap one.

As far as the blow off valve it's just gonna make a high pitched whack when you get off the throttle rather than a flutter. Your still gonna lose all the boost in the charge piping. It'll probably be easier on your compressor wheel though.

 

[bs009]

Generally in today's world most people will not even look at a compressor map compared to an engine because they want to make a big power number. People will pick a turbo based on how much power the turbo can produce and then pick an exhaust housing that fits the engine size and where you'd want to make the power.
The fun experiment is picking the turbine housing size that doesn't choke the engine too early in the RPM range and also still makes power where you want it.

I think the short of this is that unless you're doing something extra like VGT, a supercharger, or nitrous to make up the power down low you're not going to get a turbo to produce the power numbers you want and still spool quickly.
Twin scroll does help, a billet wheel will help, ball bearings might help too, but it's still going to lag otherwise.

for the BOV, I noticed that it was quicker to build the boost back up between shifts after I installed mine. I friggin love the sounds mine makes too so that alone was worth the $50 I paid for my Tial knockoff lol
The ultimate version of that though is going to be a No Lift Shift box! NLS is amazingly good!

 

[v6buicks]

Do not do that gt45 lol. But yeah your right. Did you have a t3 or t4 flange on your turbine housing? And you want a 3" v band exit? What's currently on it? The t67 clone I have in a box was about as good as it got on my end without getting into big money stuff and if that's somethin your interested in I'd come off of it pretty cheap. If not I'm not mad about having a backup around to play with lol

Also look into forced performance turbos. They're good quality and if you catch a sale right you can get a nice one for just a little bit over what an ebay pile costs. And you sure won't hate yourself when you hear the difference between a good one and a cheap one.

As far as the blow off valve it's just gonna make a high pitched whack when you get off the throttle rather than a flutter. Your still gonna lose all the boost in the charge piping. It'll probably be easier on your compressor wheel though.

I have a regular single scroll T4 with a 3" v-band outlet. I would like the same thing but as a twin scroll. I'm willing to compromise a bit though. I can modify my down pipe if need be.

Edit: I think the turbo I have is already a T67 clone.

Generally in today's world most people will not even look at a compressor map compared to an engine because they want to make a big power number. People will pick a turbo based on how much power the turbo can produce and then pick an exhaust housing that fits the engine size and where you'd want to make the power.
The fun experiment is picking the turbine housing size that doesn't choke the engine too early in the RPM range and also still makes power where you want it.

I think the short of this is that unless you're doing something extra like VGT, a supercharger, or nitrous to make up the power down low you're not going to get a turbo to produce the power numbers you want and still spool quickly.
Twin scroll does help, a billet wheel will help, ball bearings might help too, but it's still going to lag otherwise.

for the BOV, I noticed that it was quicker to build the boost back up between shifts after I installed mine. I friggin love the sounds mine makes too so that alone was worth the $50 I paid for my Tial knockoff lol
The ultimate version of that though is going to be a No Lift Shift box! NLS is amazingly good!

That's where the quick spool valve comes in! Twin scroll is effectively useless when the exhaust banks are already merged before the turbo like mine, but this valve makes it better than even a traditional twin scroll set-up.

Sound Performance Quick Spool Valve

Part of the Sound Performance Signature Series Product Line. We are pleased to bring you a revolutionary product for aftermarket turbo kits! We have created a product that had a 25% increase in rear wheel horsepower, while reducing unwanted turbo lag. It's like nitrous but you\'ll never have to...

spracingonline.com

If I get a BOV sound is going to be my main buying point. I actually like the sound of my compressor surge because that's what Grand Nationals do too. I'm sure I can get one that sounds similar. but I wouldn't want to spend much more than $250.

 

[v6buicks]

Sigh... so many dreams, but I still need a $1600 clutch plus everything that's required to make it fit. ? I'm probably going to get that process started very soon. Now that I actually have a bunch of cool stuff to install that are worthless without a clutch, I might be able to justify taking that hit. I sure as hell hope this one will last longer than all the others!

I have to remember that my flywheel holes are bigger before I send it out for mirror balancing. In fact, I should probably make the request to Monster that the holes be enlarged for M10 x1.0 instead of attempting it myself. My method worked on the stock flywheel, but I think that was a matter of luck.

 

[v6buicks]

I've been experiencing a clunk in this car ever since I did all that work with the exhaust and rear end. Yesterday it sounded like it had gotten a lot worse. I had to figure out where it was coming from or else I wasn't taking it up to MI. Turns out it's not only the dumbest clunk I've ever seen, but something I could fix with a couple tack welds in a matter of minutes.

 

[Mr_Roboto]

I would take that.

 

[v6buicks]

Welded, painted it black, and put it back.

Clunks still remain, but this definitely helped. I about guarantee the rest are related to control arm bushings. They're the only ones I haven't had the opportunity to replace, and I've isolated that noise to only happen when I have the suspension loaded up funny and going giving it some load. Considering the insane amount of extra load these poor bushings have been under since doubling the power output and planting the tires with the UMI torque arm, I'd say they're toast.

 

[v6buicks]

Success! Car made the trip and ran great the whole way. Clunks got way worse, but I blame MI roads a lot more than the car. ?

I was a little bit later than anticipated though. I checked the oil. It stinked to high heaven and was quite dark, so I changed it before I left. Nbd. I guess 3k is about my limit.

 

[sktchy]

Man what I'd give for oil pressure like that. Have you done anything with the oil pump itself or just a washer or two behind the bypass plunger or?

 

[v6buicks]

Man what I'd give for oil pressure like that. Have you done anything with the oil pump itself or just a washer or two behind the bypass plunger or?

S3 spring with 10w-30 in the summer. That's it.

 

[sktchy]

Must be a pretty healthy engine then. Have a great trip though man it's awesome to see you puttin big miles on this.

 

[v6buicks]

I bought a Monster twin disk. They said that they could match the balance, but I would either need to send them another entire flywheel and pressure late or tell them the specs. This is weird because they must have just assumed bs009 was internally rebalancing his short block. I'm no machinist, so I'm not going to even attempt to figure the spec on my own. Shipping the part might end up costing more than just having it balanced by a local shop anyway. I also haven't decided for sure if I'm putting this clutch on my L36 or a known good L67 short block. I have a lot of time to think about that.

I also have to consider that a lot of Fiero folks including West Coast Fieros just toss L36 flywheels on L67s without any consideration for balance. ?‍ I might ask the Facebook page for input on that. I don't LIKE the idea of such disregard, but if it works without taking years off the engine's life I won't make a big fuss.

 

[Turbocharged400sbc]

It's a few ounce inches difference between the two the measure flex plate is designed for the na engines and is balanced to 20 oz inches I believe they have it posted in there listings.
I've had l67 Flex plates balance in at 21 and 22 oz in

 

[v6buicks]

It's a few ounce inches difference between the two the measure flex plate is designed for the na engines and is balanced to 20 oz inches I believe they have it posted in there listings.
I've had l67 Flex plates balance in at 21 and 22 oz in

But like where does the weight have to go? I think I'd have a hard time explaining that part.

 

[Turbocharged400sbc]

You shouldn't need to you could probably just send them an NA flex plate off of any junkyard l26 and you're done.

 

[v6buicks]

Oh okay. I'm with you. You're just saying that the differences are minor enough that I shouldn't worry about which short block I want to use.

 

[Turbocharged400sbc]

Remember these engines are near net weight balanced the crankshaft is balanced by itself to a certain spec and hopefully all the rods and pistons are really close in their weights. But due to factory tolerances and variations of what gets pulled out of the bin it can vary from what it's supposed to.

If you got that custom flywheel balanced to 21 oz in, it should work pretty well for both engine short block configurations

Hell cut up an old bicycle wheel and make yourself your own balancing fixture and just comparatively balance it to your current flywheel all you need then is a drill press or a hand drill

 

[sktchy]

I'm pretty sure I've got a new l36 flywheel in my pile of junk somewhere if you need one for the cause

 

[bs009]

Not going to lie, I'm still getting vibration in mine right now. No idea if it's from the flywheel or what but I can't imagine it's much else at this point.

If you go to a local shop I would have them do it the right way and send them a crank and rod/piston deal. I got taken pretty hard locally to even do the half-ass balance that this shop in Nashville did to mine. Paid like $300, took them 6 months and was really disappointed in the results and communication. They quoted me 'a couple weeks' to finish it.
If anyone is reading this in Nashville I can't recommend enough to not go to schacklet downtown.

Love the clutch otherwise though. Way lighter than my old spec stage 5 and takes the power like a champ. Hope it all works out for you!

 

[Turbocharged400sbc]

Almost any machine shop that does balancing in house will have no problem doing what is called a comparative balance to get one flywheel to match another. The problem is is most machine shops do not have the money for a rotating assembly balancer or otherwise... so they have to farm it out to a company like Balanstar or a bigger machine shop in town

 

[v6buicks]

I agree that if the entire assembly needed to to balanced together no matter the change, then stock replacement flywheels, flex plates, and dampers wouldn't be able to exist without issues.

Ben, I can't remember your entire situation. Did you install that clutch at the same time as the T56? Are you sure it's entirely RPM dependent? With it being so much lighter than stock is it possible that the weight is causing an issue? I've heard of people having really strange symptoms with lightened flywheels.

 

[bs009]

I first had my old spec stage 3+ that I installed with the T56. That clutch was basically fried as soon as I put it in apparently though so I bought the monster right after power tour and sent it to the machine shop. I wanted to get the car going again right away though so I bought a spec stage 5 and threw that in there until about 2 months ago when I finally put the monster in.
The machine shop mirrored the balance of an L67 flexplate I had lying around.

It's definitely RPM dependent but I did also install the cam at the same time as the monster clutch so it could also be the missing balance shaft causing the vibration too though. No idea though honestly if it being so much lighter is causing it either. the flywheel is lighter than the stock one for sure but I think the whole clutch assembly might be pretty similar in weight since it's a twin disc

 

[Turbocharged400sbc]

The balance shaft makes a significant difference in vibration but it's not really noticeable above Idol in these cars with the factory engine mounts

 

[v6buicks]

I first had my old spec stage 3+ that I installed with the T56. That clutch was basically fried as soon as I put it in apparently though so I bought the monster right after power tour and sent it to the machine shop. I wanted to get the car going again right away though so I bought a spec stage 5 and threw that in there until about 2 months ago when I finally put the monster in.
The machine shop mirrored the balance of an L67 flexplate I had lying around.

It's definitely RPM dependent but I did also install the cam at the same time as the monster clutch so it could also be the missing balance shaft causing the vibration too though. No idea though honestly if it being so much lighter is causing it either. the flywheel is lighter than the stock one for sure but I think the whole clutch assembly might be pretty similar in weight since it's a twin disc

Welp. Very hard to say then. I've never heard anyone complain about vibration after deleting the balance shaft, but that's the very reason why it's there! Best I can do to help is make you not alone when my car starts doing the same shit after installing this clutch with and an ST5 cam. ?

What RPM do you notice it? Does it matter if it's under load or not?

 

[bs009]

I'll take the car on a drive again and see if I can give more specifics but I believe it was anything above 4,000 rpms where I would feel it