(I own an 87 turbo so this isn't a NA-->turbo only thread)
Well long story short This motor was a package deal with the Supra I bought from my best friend, this motor was "supposed" to be a JDM GTE as per the person who sold it to my friend.
Well..... Its not. (pics below)
It was a GE motor that someone put GTE pistons in, now im no 7M expert, but the way the #1 rod bent looks as if the guy didnt even put in GTE rods (if they are even different, I would think so given how Toyota did the 4A series of motors). Are these GTE rods?
The crank is ruined, Journal 1 is sooo dark its not funny, Journals # 3, 4, 5 All had bearings in about 4 pieces and chewed up. But on the bright side all the main journals and bearings looked good, so no line boring needed.
But need some advice:
1: There was some very slight rust in Cyl # 1 I havent honed it yet to see how bad it is, but whats a rule of thumb about cyl wall rust and overboring? I was planning if it was bad getting .040 over pistons.
2. Cyl # 1 at the very bottom the bent rod aparently chipped a dime size piece out of the cyl wall, but like I said at the very bottom not more than a half inch up from the bottom of the cyl wall. Will this be okay, The piston rings dont go down that far do they?
3. (NA-> turbo type question here) This motor doesnt have piston oil squirters how bad is this, this motor may only see minor mods such as intake, DP, and exhaust, maybe 10lbs boost, just to appease me till I build this other motor (known GTE block) with forged bits.
4. I have some pics below, Where does the NA knock sensor go, and where is the supposed spot for the 2nd supposed to be tapped at? My machinist may know, but hey im curious too.
5. Does this block have a oil & water supply for the turbo? Ive saw a NA--> turbo oil line kit. What about the water supply does this block have a spot for that?
Okay so as of now, unless my machinist says the block cant be bored due to cyl wall pitting, Im going to have this block done. Not terribly expensive but enough to feel comfy and get the car going again.
Parts include:
(bottom end)
GTE rods
oversized NPR pistons (wanting .20 over to be safe, but may need .40)
OEM bearings
a Good STD crankshaft
OEM oil pump
OEM timing belt And a Koyo tensioner
(other bits I cant think of now)
Cometic MHG
Cometic gasket kit
(plus a few more gaskets from dealership)
Machinist will do a head job to to get it all nice for me, along with Machining the block and head for a MHG
Driftmotion rebuilt CT26, probably a small trim one, I dont need anything large for now.
That should get me going, Im just going to swap all the other bits from my GTE motor (which is currently in the car) on to this one.
And pics for reference:
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Well long story short This motor was a package deal with the Supra I bought from my best friend, this motor was "supposed" to be a JDM GTE as per the person who sold it to my friend.
Well..... Its not. (pics below)
It was a GE motor that someone put GTE pistons in, now im no 7M expert, but the way the #1 rod bent looks as if the guy didnt even put in GTE rods (if they are even different, I would think so given how Toyota did the 4A series of motors). Are these GTE rods?
The crank is ruined, Journal 1 is sooo dark its not funny, Journals # 3, 4, 5 All had bearings in about 4 pieces and chewed up. But on the bright side all the main journals and bearings looked good, so no line boring needed.
But need some advice:
1: There was some very slight rust in Cyl # 1 I havent honed it yet to see how bad it is, but whats a rule of thumb about cyl wall rust and overboring? I was planning if it was bad getting .040 over pistons.
2. Cyl # 1 at the very bottom the bent rod aparently chipped a dime size piece out of the cyl wall, but like I said at the very bottom not more than a half inch up from the bottom of the cyl wall. Will this be okay, The piston rings dont go down that far do they?
3. (NA-> turbo type question here) This motor doesnt have piston oil squirters how bad is this, this motor may only see minor mods such as intake, DP, and exhaust, maybe 10lbs boost, just to appease me till I build this other motor (known GTE block) with forged bits.
4. I have some pics below, Where does the NA knock sensor go, and where is the supposed spot for the 2nd supposed to be tapped at? My machinist may know, but hey im curious too.
5. Does this block have a oil & water supply for the turbo? Ive saw a NA--> turbo oil line kit. What about the water supply does this block have a spot for that?
Okay so as of now, unless my machinist says the block cant be bored due to cyl wall pitting, Im going to have this block done. Not terribly expensive but enough to feel comfy and get the car going again.
Parts include:
(bottom end)
GTE rods
oversized NPR pistons (wanting .20 over to be safe, but may need .40)
OEM bearings
a Good STD crankshaft
OEM oil pump
OEM timing belt And a Koyo tensioner
(other bits I cant think of now)
Cometic MHG
Cometic gasket kit
(plus a few more gaskets from dealership)
Machinist will do a head job to to get it all nice for me, along with Machining the block and head for a MHG
Driftmotion rebuilt CT26, probably a small trim one, I dont need anything large for now.
That should get me going, Im just going to swap all the other bits from my GTE motor (which is currently in the car) on to this one.
And pics for reference:
