The Beautiful Puzzle: 1987 3.3L 930 EFI Build

[gsmith660]

+1 I am a DIY kinda guy also and there is nothing wrong with Megasquirt it is open source and easily configured, it supports a lot of different stuff ie EDIS, and I can tune a car without a dyno and make it run really well. It doesn't have the vanity tax on it that Motec and Haltech has, their are others that aren't real expensive but aren't configured to use a laptop so you can really see what is going on they use a small screen to change parameters.

Originally Posted by Saml01

I'm a DIY guy like yourself and when I was starting out the MS was recommended by the community for my car and I built it and tuned it from scratch so naturally I would go with what I am familiar with. I was just trying to see if you guys have a preference towards one particular unit due to a specific reason and you basically answered my question.

[Ken911]

Actually several people here used MS. Both ms-2 and ms-3 most of the guys doing thier own tuning use the MS. The choice of ms-2 vs ms3 depends on what spark system and if you going to use sequential injection. If your going to use coil on plugs and or sequential injection then ms-3 is your best bet. Sequential inject is only needed if you end up using really large injectors like for e-85 with a lot of boost and are having trouble getting it to idle and be drivable around town.

[CaptainCalf]

Turns out the turbo needs more then just a new set of brgs, so it's off to Garrett for a complete rebuild

[350HP930]

Well, that's a pretty obvious sign the bearings failed when it was spooling instead of it just seizing up after shutdown. If you are sure it had oil going to it I'd suspect either defective bearings or a contamination issue.

PS - When this was still my project before passing it onto Rick, I was seriously concidering MS as an option since I'm a bit of a hardcore tinkerer.

[CaptainCalf]

Originally Posted by 350HP930

Well, that's a pretty obvious sign the bearings failed when it was spooling instead of it just seizing up after shutdown. If you are sure it had oil going to it I'd suspect either defective bearings or a contamination issue.

PS - When this was still my project before passing it onto Rick, I was seriously concidering MS as an option since I'm a bit of a hardcore tinkerer.

Initially it had oil which I confirmed, but something went South since then and we suspect the oil feed line plugged prolly due to the restrictor fitting, which will be tossed!

[350HP930]

Just to state the obvious, make sure to wash and blow out all the plumbing and give the intercooler a good reverse direction wash through with solvents and then a good reverse direction blow through with some hard knocking involved.

Looks like that compressor made some aluminum powder and grit during its self destruct phase and hopefully most of it has been trapped in the plumbing and intercooler grime which means you can make sure it doesn't find its way into any top ringlands or valve seat areas where it can really do damage.

[CaptainCalf]

Originally Posted by 350HP930

Just to state the obvious, make sure to wash and blow out all the plumbing and give the intercooler a good reverse direction wash through with solvents and then a good reverse direction blow through with some hard knocking involved.

Looks like that compressor made some aluminum powder and grit during its self destruct phase and hopefully most of it has been trapped in the plumbing and intercooler grime which means you can make sure it doesn't find its way into any top ringlands or valve seat areas where it can really do damage.

Good point & thanks!

[CaptainCalf]

Garrett has a fast turn around time!

Here's a pic of the smoked cartridge & the new one installed and ready to go:

[350HP930]

Congrats. So I assume the damage to the diffuser was only superficial?

[CaptainCalf]

Originally Posted by 350HP930

Congrats. So I assume the damage to the diffuser was only superficial?

Yep, smooth and go

[350HP930]

Is there an ETA for the reconstruction and final tuning. I'm dying to come over to pick up my drink cozy and share the dyno sheets with a friend with a monster grand national for comparison, lol.

[CaptainCalf]

Originally Posted by 350HP930

Is there an ETA for the reconstruction and final tuning. I'm dying to come over to pick up my drink cozy and share the dyno sheets with a friend with a monster grand national for comparison, lol.

Soon now that the turbo has been sorted and don't forget to bring over the alarm key

[350HP930]

LOL, will do

[CaptainCalf]

Here's a vid of the throttle response improvement after Wayne at TPG in Pompano Beach, FL sorted the MAP sensor and Idle valve:
930 EFI running nicely - YouTube

Also, here's a vid of the turbine in the newly rebuild turbo spinning long after shut down, as it should:
Turbo - YouTube

[CaptainCalf]

Wayne also installed a boost switch on the dash to toggle between hi and low boost. He will likely set the low boost with waste gate springs at around 0.8bar and high boost from there up to around 1.2bar. Hope I can keep it in the low boost position at least hafl the time

[JFairman]

Good luck with your rebuilt turbo.

Just wanted to mention there are alot of spdt rocker switches available in a size that fits that molded rectangle place in the dash where you put your toggle switch very nicely.
You will be hitting that toggle switch at night when reaching for the headlight switch and it's mounted in a piece of flexable vinyl like plastic with foam rubber backing thats about 1/8" thick that is too flexible for a good toggle switch mount but is OK for a medium size low profile rocker switch.

You could also put a 911 mirror change over rocker switch there if you wanted to use a Porsche rocker switch. Pelican sells them.

If you do that a razor blade cuts out the rectangular hole in the dash for the switch easily. Measure for a snug snap in fit for the switch and use masking tape to make your cut lines for the razor blade.
Pelican Parts - Product Information: 911-613-113-00-M100

[CaptainCalf]

Originally Posted by JFairman

Good luck with your rebuilt turbo.

Just wanted to mention there are alot of spdt rocker switches available in a size that fits that molded rectangle place in the dash where you put your toggle switch very nicely.
You will be hitting that toggle switch at night when reaching for the headlight switch and it's mounted in a piece of flexable vinyl like plastic with foam rubber backing thats about 1/8" thick that is too flexible for a good toggle switch mount but is OK for a medium size low profile rocker switch.

You could also put a 911 mirror change over rocker switch there if you wanted to use a Porsche rocker switch. Pelican sells them.

If you do that a razor blade cuts out the rectangular hole in the dash for the switch easily. Measure for a snug snap in fit for the switch and use masking tape to make your cut lines for the razor blade.
Pelican Parts - Product Information: 911-613-113-00-M100

Thanks Jim, that mirror switch looks like it would work nicely. I've got a lot of little things to attend to on the car, so if I do hit the boost switch while turning on the lights I'll add that to the growing list

[CaptainCalf]

Since last update Wayne at TPG has fabricated a new intake pipe setup using 3" alum vs the 2.5" piping I had on it so it will flow better now.

Also, he had to send the turbo back to Garrett cuz it seems the seals are leaking causing oil blowing by into the intake which makes smoke.

[proffighter]

Better flow is always a nice goal, but here I am not sure if this is that good regarding flow. Why does your welder did not used a bow?

[CaptainCalf]

Originally Posted by proffighter

Better flow is always a nice goal, but here I am not sure if this is that good regarding flow. Why does your welder did not used a bow?

Good eye! It may cause a little turbulance there, but prolly not enough to be overly concerned about