My Dyno Pics / Vids

[Maxx Mazda]

Well, my pickup was still completely submerged, but I was down a quart. (AWR pan holds about 4 total without blocking my return drain.)

 

[Maxx Mazda]

Also Dana, I'll post pics when I get home. Ordered new rod bearings and main bearings, but if the crank is ****** too bad, I gotta grab my other one and drop it in, but that means the tranny comes off.

BTW, used your trick of drilling holes in the bellhousing for the windage tray and it worked like a charm! Did you jsut use rubber plugs after?

 

[mspeedP5]

BTW, used your trick of drilling holes in the bellhousing for the windage tray and it worked like a charm! Did you jsut use rubber plugs after?

Hmmm, care to share what this is about...?

 

[Maxx Mazda]

Just drill 2 5/8" holes in the bellhousing where the bolts are (look in the FSM there's a really good pic) and you can get them off without taking the tranny off.

So ya, pulled the bearings, and I spun rod bearings 2 and 3 due to momentary oil starvation. Main bearings are fine. New ones go in tomorrow.

 

[Kooldino]

Also Dana, I'll post pics when I get home. Ordered new rod bearings and main bearings, but if the crank is ****** too bad, I gotta grab my other one and drop it in, but that means the tranny comes off.

True story.

BTW, used your trick of drilling holes in the bellhousing for the windage tray and it worked like a charm! Did you jsut use rubber plugs after?

I couldn't find plugs the right size, so i just cleaned it and used RTV.

 

[Kooldino]

Just drill 2 5/8" holes in the bellhousing where the bolts are (look in the FSM there's a really good pic) and you can get them off without taking the tranny off.

So ya, pulled the bearings, and I spun rod bearings 2 and 3 due to momentary oil starvation. Main bearings are fine. New ones go in tomorrow.

phew. Could have been a lot worse. be careful!

 

[igdrasil]

is your crankshaft balanced?

 

[Jaysanooch]

I'm really messed up over this. So spinning a bearing is usually from what...oil starvation? Or is it being low on oil AND boosting 17+psi which increases the chances of this happening? Or can you spin a bearing at anytime here? I guess anything is possible, even with a built motor.

I'm going forged really soon...but I don't know if I can deal with this. Don't get me wrong, I'm trying to be supportive here, I'm just really pissed for you and discouraged all together now.

 

[Maxx Mazda]

is your crankshaft balanced?

No, factory new.

 

[Maxx Mazda]

I'm really messed up over this. So spinning a bearing is usually from what...oil starvation? Or is it being low on oil AND boosting 17+psi which increases the chances of this happening? Or can you spin a bearing at anytime here? I guess anything is possible, even with a built motor.

I'm going forged really soon...but I don't know if I can deal with this. Don't get me wrong, I'm trying to be supportive here, I'm just really pissed for you and discouraged all together now.

Ya man, forged blocks are by no means bulletproof, but they are SIGNIFICANTLY stronger. I should have went with the TOGA bearings originally, but i had OEM, and I'm using OEM again since I could get them in one day unlike everythign else for our engine lol.

Mind you, race bearings or not, no bearing in the world will survive oil starvation. I swear it was only for like 1 second too, around a real sharp corner but at 6,000 RPM that was enough for 100 revolutions, so when you think about it, it's more than enough.

I'm SO lucky nothing else was damaged.

 

[Jaysanooch]

I here ya....still shaking my head though. Could of been worse I guess but I think your lucky because you have a garage, the tools, the knowledge and can fix it yourself.

I have none of the above..lol and that's why I've been losing sleep thinking...wtf am I doing with a boosted car.

 

[Maxx Mazda]

Ya, and I caught it in time. As soon as it started knocking I shut it down (letting turbo cool of course) and that's most likely what saved it.

 

[igdrasil]

Are you sure it was oil starvation? Unbalanced crankshafts will wear bearings so fast...it will start spinning them and you will not notice. It will also damage the oil pump and probably the pulley.

A few seconds of oil starvation will not damage bearings that quick...it needs time and abuse.

So if its brand new, if you can, do balance it.

 

[Maxx Mazda]

Shouldn't it come balanced from the factory? Like it was a BRAND NEW engine right from Mazda.

 

[igdrasil]

Shouldn't it come balanced from the factory? Like it was a BRAND NEW engine right from Mazda.

yep, for the stock piston and rod weight.

2grams off the balance converts to over 250lbs of unbalance @ 7000rpms

 

[ctt 1982]

sorry to hear about this nick. glad to hear it only a knock and not a boom. hope you get it back on the road running more reliable in no time.

 

[FunkyBuddha]

s*** man..was this at the track?

 

[GoProtege]

Cant wait till I get my new head, my IC pipes made up, and my EMS. Then I'm gunna go get my baby dynoed.

Nice numbers man

 

[Maxx Mazda]

s*** man..was this at the track?

No. Stoney Trail.

 

[Kooldino]

No, factory new.

No, your crank was balanced by mazda.