checking out an 86 mk3 tomorrow

cre · 11-28-2009, 08:10 PM

Cracked piston... or pistonS (plural)? Either way at this point I would tear the whole thing apart. Metallic sparklies in the oil do not do good things for the bearings, oil pump, turbo... etc., etc....

Have any pics?

cvbikeguy · 11-29-2009, 12:52 AM

pistons, 2 and 3. here are the picsssss

bout to remove the starter.

cracked pistons.... ouch

timing cover crap coming off (sorry if im not too literate with all the car terminology. i honestly know nothing about cars)

cover removed

taking off... whatever that is.

lifted car up to disconnect

so yes i am definitely going with the machine shop. too much metallic dust inside the block. soooo i have everything disconnected and the engine is now ready to be hauled out to a machine shop..... sweeeet

cre · 11-29-2009, 01:01 AM

Yeah, that need to go to the shop... that's terrible.

The "whatever that is" would be the block side of the water pump.

cvbikeguy · 11-29-2009, 01:15 AM

haha thanks cre.

MA70-3.0GT · 11-29-2009, 04:56 PM

OUCH, melted pistons too. Actually from the initial pic of the block I was going to say it looked like the HG was dropping water into 1,2 & maybe 3 from the colours but now I see the melting it's probably just cooked white through running way lean/hot &/or pre-ignition (pinging I think it's known as in the U.S?)

Definitely a full stripdown job here, you'll be lucky if the bores aren't damaged from the meltdown & if it's got really hot the head & block may be warped.

I can't remember now, was the car running when you bought it/until you stripped it? Must have been screaming for mercy for a while... Sorry to see it's that nasty & damn I hope there's nothing like that waiting in my motor!

EDIT-: OK I've reviewed the post & it WAS running when you bought it. How oh how was this thing not clacking & banging & rattling to high hell, not to mention running on 3 or 4? Best of luck with the rebuild, I think if I found that I'd just find another engine...

cvbikeguy · 11-30-2009, 06:37 PM

yea strangly there was no noise or anything that made me curious aout the reliability of the car. and yea it ran fine for only having 4 pistons running. lol in fast i thought it was pretty fast too... i wonder if im gonna feel alot more power ofter this rebuild.

well the damage isnt bad at all and the rebuild kit that im getting has pistons included so it shouldnt be bad at all. overall costs of the shop are 565!!.

sweeeeeet.

so yea ill put some pics up soon. were about to get the hoist to lift this bad boy out. good thing i got temporarily laid off......

cre · 12-01-2009, 07:45 AM

Good god.... if that sad engine left you feeling that the 3500lbs slab it was dragging around was fast... you might want to reconsider the rebuild and just swap in a nice rebuilt 4 cylinder from a Celica or something... I don't know if you'll be able to cope with much more.

No sounds... could be because it had finally finished coughing up chunks of lung and moved on the whole dying quietly stage. That thing was hurting... I'll be amazed if a complete rebuild isn't required (including boring the cylinders and polishing the crank).

You already got the quote? $565 for what?

cvbikeguy · 12-02-2009, 03:16 AM

***tip***

so i know almost everyone knows this trick but i had to search a little to find it so i hope this helps anyone trying to do this.

if your having trouble getting that big fat pully off, stick a flat bar inside the whole where the starter is and wedge it in the flywheel. tada!!! now you can get that dang bolt off.

more info at..... http://www.toyota-supra.info/forums/...-w-pics-2.html

Well I finally got the crank bolt off. To anyone that wants to know how to do it I will tell you. First though, I would like to say what did not do it. 5 different impact guns-nope. Car in gear, ebrake on, someone standing on the brakes-nope. Did not get the chance to use the starter bump method. This is what works and what will work every single time-crowbar in the flywheel through the starter hole. Worked so good I think Im going to patent that procedure. Walked the crank pulley off with 2 flathead screw drivers. Had timing belt off in less than 5 minutes after that. I was messing with this crank bolt for 4 days, but now that its off the head is ready to be lifted off. I just don't have someone to help me lift it. I can do it myself, I bench over 205lbs atm, I just don't want to risk banging it into something like the radiator support or the fender. Loosened head bolts in the order shown in the TSRM and did it in 3 passes. Did not need the SST for the head bolts, a NAPA 10mm allen head socket worked just fine for $4.65. Will have pictures in 2 hours.

Thanks for all the suggestions.

-IHateHacks

cvbikeguy · 12-02-2009, 05:24 AM

hey Cre,

do you know alot about timing? i was told i should time my vehicle for my driving style while its in this stage. is there a way to do that without getting adjustable cams?

cre · 12-02-2009, 08:07 PM

Quote:

Originally Posted by cvbikeguy

hey Cre,

do you know alot about timing? i was told i should time my vehicle for my driving style while its in this stage. is there a way to do that without getting adjustable cams?

Well, you could get custom cams built.... lol... other than that, no, adjustable gears are it and they're somewhat of waste on a N/A, IMO.

Yeah, that freeze plug sure wasn't helping.... I'm surprised you never saw any coolant leaking.

600+ HP on a stock HG?! That'd be the day... well, maybe it'd last for 2, but that's about it. I wouldn't trust the stock HG for more than about 350RWHP... not if I wanted it to last (and that's pushing it as far as I'm concerned).

Block and HG measurements are here:
http://www.supramania.com/forums/sho...sket+thickness
As you don't know what's been previously taken off the block and head your machinist will need to measure both and you'll need to select a suitable head gasket after.

NOTE: Composite (OEM) head gaskets are NOT reusable!!!!

11-29-2009, 04:56 PM	#5
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	OUCH, melted pistons too. Actually from the initial pic of the block I was going to say it looked like the HG was dropping water into 1,2 & maybe 3 from the colours but now I see the melting it's probably just cooked white through running way lean/hot &/or pre-ignition (pinging I think it's known as in the U.S?) Definitely a full stripdown job here, you'll be lucky if the bores aren't damaged from the meltdown & if it's got really hot the head & block may be warped. I can't remember now, was the car running when you bought it/until you stripped it? Must have been screaming for mercy for a while... Sorry to see it's that nasty & damn I hope there's nothing like that waiting in my motor! EDIT-: OK I've reviewed the post & it WAS running when you bought it. How oh how was this thing not clacking & banging & rattling to high hell, not to mention running on 3 or 4? Best of luck with the rebuild, I think if I found that I'd just find another engine... __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!! Last edited by MA70-3.0GT; 11-29-2009 at 05:01 PM.

12-02-2009, 03:16 AM	#8
cvbikeguy 3" Exhaust Join Date: Nov 2009 Location: Castro Valley, CA Posts: 248	*tip* so i know almost everyone knows this trick but i had to search a little to find it so i hope this helps anyone trying to do this. if your having trouble getting that big fat pully off, stick a flat bar inside the whole where the starter is and wedge it in the flywheel. tada!!! now you can get that dang bolt off. more info at..... http://www.toyota-supra.info/forums/...-w-pics-2.html Well I finally got the crank bolt off. To anyone that wants to know how to do it I will tell you. First though, I would like to say what did not do it. 5 different impact guns-nope. Car in gear, ebrake on, someone standing on the brakes-nope. Did not get the chance to use the starter bump method. This is what works and what will work every single time-crowbar in the flywheel through the starter hole. Worked so good I think Im going to patent that procedure. Walked the crank pulley off with 2 flathead screw drivers. Had timing belt off in less than 5 minutes after that. I was messing with this crank bolt for 4 days, but now that its off the head is ready to be lifted off. I just don't have someone to help me lift it. I can do it myself, I bench over 205lbs atm, I just don't want to risk banging it into something like the radiator support or the fender. Loosened head bolts in the order shown in the TSRM and did it in 3 passes. Did not need the SST for the head bolts, a NAPA 10mm allen head socket worked just fine for $4.65. Will have pictures in 2 hours. Thanks for all the suggestions. -IHateHacks Last edited by cvbikeguy; 12-02-2009 at 03:17 AM. Reason: forgot some info

12-02-2009, 05:24 AM	#9
cvbikeguy 3" Exhaust Join Date: Nov 2009 Location: Castro Valley, CA Posts: 248	timing... hey Cre, do you know alot about timing? i was told i should time my vehicle for my driving style while its in this stage. is there a way to do that without getting adjustable cams?

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11-28-2009, 08:10 PM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Cracked piston... or pistonS (plural)? Either way at this point I would tear the whole thing apart. Metallic sparklies in the oil do not do good things for the bearings, oil pump, turbo... etc., etc.... Have any pics?

11-29-2009, 12:52 AM	#2
cvbikeguy 3" Exhaust Join Date: Nov 2009 Location: Castro Valley, CA Posts: 248	pistons, 2 and 3. here are the picsssss bout to remove the starter. cracked pistons.... ouch timing cover crap coming off (sorry if im not too literate with all the car terminology. i honestly know nothing about cars) cover removed taking off... whatever that is. lifted car up to disconnect so yes i am definitely going with the machine shop. too much metallic dust inside the block. soooo i have everything disconnected and the engine is now ready to be hauled out to a machine shop..... sweeeet

11-29-2009, 01:01 AM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Yeah, that need to go to the shop... that's terrible. The "whatever that is" would be the block side of the water pump.

11-29-2009, 01:15 AM	#4
cvbikeguy 3" Exhaust Join Date: Nov 2009 Location: Castro Valley, CA Posts: 248	haha thanks cre.

11-30-2009, 06:37 PM	#6
cvbikeguy 3" Exhaust Join Date: Nov 2009 Location: Castro Valley, CA Posts: 248	yea strangly there was no noise or anything that made me curious aout the reliability of the car. and yea it ran fine for only having 4 pistons running. lol in fast i thought it was pretty fast too... i wonder if im gonna feel alot more power ofter this rebuild. well the damage isnt bad at all and the rebuild kit that im getting has pistons included so it shouldnt be bad at all. overall costs of the shop are 565!!. sweeeeeet. so yea ill put some pics up soon. were about to get the hoist to lift this bad boy out. good thing i got temporarily laid off......

12-01-2009, 07:45 AM	#7
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Good god.... if that sad engine left you feeling that the 3500lbs slab it was dragging around was fast... you might want to reconsider the rebuild and just swap in a nice rebuilt 4 cylinder from a Celica or something... I don't know if you'll be able to cope with much more. No sounds... could be because it had finally finished coughing up chunks of lung and moved on the whole dying quietly stage. That thing was hurting... I'll be amazed if a complete rebuild isn't required (including boring the cylinders and polishing the crank). You already got the quote? $565 for what?