Everything i'm seeing in the real world is not megasquirt

That said, i'm still planning on ms3 pro, which i understand is alittle different than the previous ms1, ms2 and ms3 units of old

 

Yup. I've mentioned that a number of times over the years. The MS1, MS2, and MS2 w/ MS3 daughter card are all through hole. They are also typically assembled.

MS3-PRO, MS-Module (what I run) are surface mount. You have less chance of hardware failure, assembly issues, etc.

MS3-PRO:




What I'm running:





Old MS2:






Four years ago I do a writeup on how to use a MS module in a '165 ECM case for direct plug and play with factory harness, yet everyone still wants to run an MS2 and than complains when they have noise issues or component failure.

-- Joe

 

I just want to buy a box and plug a harness i made into it. Thats what ms3 pro seems to deliver for 1100$. But doesnt do low z injectors so points go to holley...but still more if going dominator to get the i/o.
Its a tough call

 

It will do low z injectors, just need injector resistor packs. A lot of OEM cars work this way.

The injector drivers are limited to like 4.5 amps I believe. Low-z injectors were all the rage 15 years ago, but you can get 160lb high-z injectors now. Unless your making more than 2500hp, you will be fine.

-- Joe

 

Hehe 160's arent enough

On a side note they do make id2000's in high z which are 205 lb, but they are 600$ more than siemens 225 low z. Unless my buddys can get me discounted dealer rates.... Fic also has 2150cc which gofor 1580$
The 205's at 75-80 psi base may do it

 

So this is a 100k tube chassis build?

But in all seriousness, if you're planning on building something that's more than 2500hp at peak, and will idle you should be thinking of staged injection.

-- Joe

 

Depends on what fuel you are talking about. Gas, no problems with singles. Ethanol, may need the staged, maybe not depending how much fuel pressure. Methanol, needs 2 injectors for sure.

 

The car runs much better now that I have switched to the Holley efi system. Almost finished fine tuning it but let me tell you....at 70 mph in 3rd gear I have no trouble matting the gas pedal and leaving over 200 ft of rubber down. I am also waiting for a dual fan controller setup which should be here by Wednesday since my existing one suck.

 

That never gets old lol rolling burnouts

 

Yeah. It's a whole new animal. Why didn't I feel this with the 76 mm single setup I was running before? The car feels so different now.

 

Because a single turbo running off 6 feet of exhaust pipe is a crap design.

You've got exhaust gasses expanding at different rates traveling through a bunch of turns to spin a turbo. Your twins are more evenly fed, and a heck of a lot closer to the exhaust ports.

That's one of the reasons the banks manifolds work so well. Even flow, and a thick casting that keeps all that heat in to spin the turbo. The downside is they require on-center turbo's which are kinda expensive.

-- Joe

 

Well, I finally get some new seats in it and put another tune in it and now I need a dang clutch.......Slipping in 3rd gear now....Someday I will be able to enjoy this car haha

 

Don't wanna do an auto?

I ended up putting a TH350 in mine a few years ago.

-- Joe

 

Nah I don't really feel like going to an automatic transmission. Not really any fun.

 

I hear ya. Depends on what you want to do with the car.

I've got a TH400 in my '75 Stingray, and a T-10 (4spd) in my '79 Stingray. The '79 has some frame issues and is coming apart. I keep going back and forth in my head about leaving the TH400 in the '75 or sticking the T-10 in it.

-- Joe

 

Full manual th400 is still fun imo lol just cant beat their strength per dollar. Your basic stock shaft/gears build with upgraded clutch packs is good for 800-1000 hp all day long. And about 900-1100$ at typical shops


Singles do have alittle more piping but depending on the size of primaries and secondarys and if you heat wrap or not, and obvously turbine wheel size and ar housing, that will determine how well they spool.

Two smaller wheels in twins have far less inertia to move so generally will spool faster

 

Very true. I guess we shall see when time comes as for the Tko holding up.

 

Clutch disc is definitely toast.

 

If you are making 800+ hp you might want to look into a multi disc clutch.

-- Joe

 

I doubt i'm making that much with these little turbos.

 

Even a conservative number, in the dead center of the island where efficiency is at it's peak is 50lbs/min per T70. That's nearly 1,000 hp total.

They *could* push upwards of 70 lbs/min each.

-- Joe

 

1000 On 70 lb injectors? No way

14 psi on a strong 355 should be near 550-600whp, maybe bit more. Seen strong 383 make 520 on 8 psi thru a stick shift. My twin 70 400 with afr 195's made 640 on 12 thru the auto 400. Thats 700-720 thru a stick, and that was 80% dc on 80 lb siemens

 

What was wrong with it?

The turbos flow up to 70lbs/min each. Do the math..

-- Joe

 

Just cuz they flow up to 70 lbs min doesnt mean they will be flowing that much at 14 psi....

 

These turbos I have made 705 rwhp on a 383 with dart heads and a solid roller cam thru a t56. On 12 to 14 lbs. I'm sure I'm around 600 to 650 rwhp. Car has no problem braking loose in 3rd at 70 mph

 

True, at 14psi they are about 45lbs/min.

But that's still around 900 fwhp.

-- Joe

 

I would place the math at low 800's fly wheel, 660-700 whp in best case scenario which isnt to far off from where hes at now. 40-42 lbs min and 2.0 pressure ratio.

They have the potential to make 1200 whp on the smaller cubes in a stick shifter. I made 1009 sae on a pair thru a big stalled auto and more cubes and i dont think they were done yet

 

This is why I like blowers. I know my CFM based on what RPM I'm at hahaha

-- Joe

 

I managed to install the new flywheel and clutch tonight . Man the Lakewood bell housing is pretty heavy along with the Tremec tko600. Hope to finish up the install tomorrow evening.

 

That would be pretty cool to make somewhere around there.

 

Nodular flywheel?

When I was running that T5 I got from you I used the Ram billet flywheel and 6 puck ceramic clutch. I had the P1SC though so I don't think it woulda made more than 550-600hp.

I'm torn about th400 or T10 in my '75 Vette. I've got both setups, complete.

You planning on getting that up the track this year? It's too hot right now, but I figure September and October will be nice.

-- Joe

 

Stock replacement flywheel. As for getting g to the track this year....we shall see. Doubt I'll make it.

 

You need to carve out some time for yourself to enjoy the summer. (I should talk, huh?).

If you do manage to get up to Epping let me know so we can hang out. It's only 20 minutes from my house. Maybe by the fall I'll have something that actually leaves the property. (doubt it though)

-- Joe

 

I will have to see how things go. Have a lot on my plate still

 

Managed to install the new flywheel and Ram HD Clutch. Now to break it in for 500 to 1000 miles. Which for me will be hard to do since I don't drive the car much yet.

 

Parting ways with it already? Why

 

Turbos are so 2015..

-- Joe

 

Don't get me wrong they are fun but ive been doing some thinking and that usually leads to no good. I want to do a few different things with the car now for some reason as well. And its hard to break a clutch in with twins lol

 

I guess lol just seems sudden since you just got it together and running. I dont see how being twins makes it any different for clutch break in than any other setup

 

Yeah i know., I have a hard time sticking with something for awhile.

 

But i will continue with this setup even if it doesn't sell

 

Been driving it when I can...have a mild tune in it while im breaking in the clutch. Once broken in then I can tune for high rpms and hard throttle runs.

 

So my clutch decided to start slipping in 3rd. Found a broken throw out bearing......now patiently waiting for my next clutch.....

 

I went through this same BS back in 2002/2003. The only thing I could get to grip was this custom ceramic 6 paddle ram clutch, with an unsprung hub and it completely destroyed the flywheel after 1 season.

One of my circle track buddies (as I'm sure you know, NH is nascar country) was trying to convince me to use on of their multidisc clutches when I started doing the Firebird. You could look into that. Big money though.

-- Joe

 

I decided to give a Spec 5 a try. Buddy of mine used one with the same turbos im running and didn't have any issues.

 

New clutch in. Time for break in.

 

So far with the new clutch the car has been running well. Pretty much rebuilt the front suspension as well( new struts and mounts,new ball joints,new 36mm front sway bar with new bushings and end links).

I am running a safe tune until the clutch is broken in and I still enjoy how the car pulls. On another note I may end up changing out the down pipes to an x pipe with rear exhaust. I will try to post some pictures of the car this weekend.

 

Not much to report as of late. Its getting colder here in Mass so I haven't done much with the car. I also ruptured my right bicep a few weeks back and will be going in for surgery next week. 3 months of being out of work too once the surgery is completed then probably back for light duty only. I probably wont be able to start on the car again until Spring time(optimistically) so I'm kind of bummed out right now.

 

Ugg. That's no good.

I gotta go in Nov 5 for 3-4 days to fix my ticker. But the recovery should be quick (unless they screw up).

-- Joe

 

Decided im sticking with my setup for now. The car is put away until spring. Cant do much now since I just had Distal bicep surgery. Im hoping to finish breaking in the clutch and get some tuning done.