I hate surpas!

northsupra

Normally Insane
Mar 30, 2005
99
0
0
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Norway
But are you sure that you need a jdm engine.
cant you just overbore your block one size?
and go like 0.20 over or something...( this is were my knowledege ends but im a good troll :) )

I cant see why go jdm if you got a trubo engine allready.
 

T701jz

3M ENGINEER - R.&.D
Jul 23, 2005
657
0
0
Santa Clarita Ca.
Just look at all the thread in this forum regarding the 7M. Pretty much decide for your self how much more money you're willing to invest on 7M. A year 1/2 ago I decided to go with the front clip 1jz and to this point I have not once yet to replace any part or trouble shoot any problem with the engine at all. I save so much money that I have enough to go big (hp) and to custom detail the car. What ever you do, NO WHINING.
 

miggles

i wasnt speeding officer
Jun 3, 2005
526
0
0
48
perth West Australia
Got some mates with jz70's.They keep bagging the 7m but their always chasing ignitors,crank pulleys getting thrown off,other electrical problems etc.Ive spun a bearing on rod #1 and broke ring landings on same piston due to lack of maintenance.(oil changes when i felt like it 15k and 20k,low oil etc) Ive learnt my lesson now and since rebuilt the engine with a undersize crank.My crank had bits of bearing welded to it but it was able to be ground and rods resized with new oversize pistons etc.I also change my oil every 2-3k's.Fill up past the full on the dipstick and constantly check my oilpressure and water temps.Just think of the parts that are designed to wear out (water pump etc) and see if you can get them locally or isit a 3week wait ex-japan (in perth west aust here)
 

supraman7mgte

Shut up,bitch!!
Apr 1, 2005
1,753
0
0
Sunny California
If the car does not run right,it obviously has not been maintained right.If you bought it this way,you should have looked around more.If you let it GET this way,wassamatta with you?These things don't work right unless you take proper care of them
 

suprabad

Coitus Non Circum
Jul 12, 2005
1,796
0
0
Down Like A Clown Charley Brown
Best advice I can give you is suck it up and tough it out and you'll be better for it. Knowledge and character just don't come cheap. Most of us have felt discouraged at some point or another...that's what separates the men from the boys.
 

gmoney

supra is as stupid does!
Apr 22, 2005
97
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home1.myspace.com
i thank for all the colorfull adjectives and ideas but people havent really answered my last question which is, if I buy the jdm engine how much should it cost to rebuild it and what parts? and how would i fix mine if i had crank walk?
 

socc924

Member
Mar 31, 2005
396
0
16
40
CT and Philly
I dont know who told you that the crank you have cant be used, or how they know, but you cant realy tell that without measuring it with a michometer. A machine shop by me can resurface a crank for $130 and they can also tell you if its too worn. It may be reusable.

If not Advance auto parts sells a reconditioned crank w/oversized bearings for $265.

I personally would think you would loss out by rebuilding a jdm. you would still want to turn the crank journals when you replace the bearings. And if you just do that with your motor now its as good as the jdm without having to buy a motor.

I would think that you would be able to fix the crank, get new pistons and rods, some head work and maybe even a upgraded turbo for the same price it would cost for a 1jz. But if you went 1jz im certain you would be happy with it.

My opinion is that getting a jdm motor would be a waste of money cause you have the same motor in your car now that can be fixed (or even upgraded) cheaper then the cost of a jdm.

Sorry so long but i have gone through all this twice. And I thought the excact same things. If you decide to go with a 1jz or jdm let me know cause my friend has a project car and were looking for a project motor, lol Good luck and let me know if theres any way I can help
 

gmoney

supra is as stupid does!
Apr 22, 2005
97
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ok i have a guestimated price out of what would be needed for a proper rebuild and im looking at 2300 in the face without shipping is that about right? thats for:
apr main studs, arp rod bolts, arp head studs, sc main bearings, sc rod bearings, high volume oil pump, oil catch can, new motor mounts, egr block off, hks metal hg 1.2mm, greddy timing belt, eagle rods, ross pistons and a new water pump. now im pretty sure thats all you need for a rebuild? i dont know but i also want the 60-1 upgrade but dont know were to go for that.
 

Wendigo

Ericsplosion
Jul 25, 2005
331
0
0
New Paltz NY
Are there many items interchangeable between the 1JZ and the 2JZ? Aside from the stroke what are the differences? And has anyone shoehorned a 2JZ intop MA70?
 

gmoney

supra is as stupid does!
Apr 22, 2005
97
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home1.myspace.com
ok i have done a crap load of research and i found what looks like a hell or a deal, i found this company out of CA. that carries jdm, and a-spec 7mgte engines for a little over 2,000 fully rebuilt with a 6 month warranty
 

91T breezen'

ROMNEY/RYAN 2012
Apr 4, 2005
1,149
0
0
NOYFB!
You could be into it for alot less than $2300.00 if you forego some of those expensive (and unnecessary) internals you mentioned. All that stuff you had on your list sounds like you plan on 650whp+! :aigo: You could do the Cleavite bearings, Ross or JE pistons, and have your rods shot peened, and you'd have strong reliability. Keep oil levels above full (synthetic 20W-50) and do your changes every 3000 miles, or at least a new filter at 2500, and then 5000mile intervals if it's not too dirty. I personally think that if the inherent problems with the 7M are dealt with accordingly (I:E. Head gasket/studs!) that it is one of the more reliable high performance motors made. The hp figures can be huge! with big boost on a correct setup. Let Supramania be your friend on buying parts, and be patient, you'll save a ton of money if you shop around! Stay 7M! It will be much easier to fix in the long run! Good luck, and stay focused. If you love Supra's, :love: you'll do it right, even if it costs a buttload of $$$! :icon_razz

Tom

P.S. PM me for info on a 60-1 Turbo upgrade, might be able to help you.
 

Adjuster

Supramania Contributor
Yep, reading your post, why are you buying new motor mounts for an 88? (Ours are the superior design, they don't rip out like the 89+ round ones do.) My engine mounts with 170+ thousand miles are them are like new. (Yes the brackets are powder coated now, but hey, the rubber part inside is still perfect, I took them apart to PC the brackets and was impressed with the quality of the design.

You don't need main studs on any motor not being built with forged rods.

Re-conditioned stock rods are good to 600rwhp, at stock rpm levels. (Unless your going to spin your 7M to over 7k, or are shooting for HP over 600, don't waste your money on forged rods.) That being said, check out the price on the Eagle rods, I hear they are not much more than the cost of re-conditioning your stockers.

If your crank is worn, and you want standard sized journals, CrankshaftSpecialist in TN can hard chrome your journals and re-machine them to standard size. (The hard chrome is not cheap, but your crank is race ready when it's returned to you. They can also machine your rod journals to any size you want. This allows you to run different rods, say those for a SBC? And those rods are CHEAPER in the forged variety... I reccomend a SBC rod, 327 journal size in just under 6" variety, and then have your pistons made to accept the right rod pin size, and have the right compression height. (ROSS can do this for you easy.) Your left with a longer rod, cheaper rod, and easy to source bearings, and you lose the silly oil squirter holes on the stock rods that lose oil pressure on the rod bearings, and provide a point of failure for the stock 7M rods.)

I run Pauter rods on my stroker crank with 327sbc bearings. (Clevite's IIRC.) You can even get SBC rods with HONDA sized pins that are very strong and lighter than what we have. (Why not go with the full bastard child when your building a custom motor eh?) Honda pins, Rods for a Chevy engine, in a Toyota block tossing custom ROSS pistons... :) Don't forget your big block chevy inner valve springs for the easy upgrade on the head. (And a set of ebay 1mm OS valves, or just a set of used 2JZ valves would be a good upgrade for any 7M head. they are 1.5mm OS, but will fit easy with some simple machine work. (Grinding the valve stems during the valve job.)

On that topic, you can build a motor with OUT doing a valve job if you want to save money. Just remove the cams, make sure you place all your lifters in the right order so you can put them back in the right places, and have your head machined for the metal head gasket. (Nice and smooth.) No need to do anything with the valves, but I do reccomend replacing the valve springs since it's easy and cheap to do, and while your at it, replace the valve seals. (Do not remove the valves to do this, so no need to cut the valves or seats.) Springs are like 70.00 from Comp Cams. Seals are cheap too. Labor is expensive, but you can do this yourself when the head is off if you have some patience and simple tools.

Replace the old oil pump with a new unit. Make sure you get the one for the GTE. (It has the taller gears, and flows the most oil.) It is the stock turbo pump. Asin makes them all. Toyota buys them from Asin. Toga buys them from Asin. If you pay more now, only blame yourself. (High pressure, what a load of crap. If you want higher pressure, just shim the OIL PUMP bypass about 6mm or one small nut that fits in there increasing the spring pressure on the pump bypass.)

If you go with ROSS pistons, set the clearance at 3k or 3.5k at the most, or it will piston slap, even when warmed up. (I have my current ones at 4k, and they slap when cold, and it mostly goes away with a warm motor.)

So here is the money.
Figure about 550 for the pistons.
250 in work on your crank if you need it.
200 or so to conditon your stock rods.
250 to 300 in machine work on the head and block. (Skim the head surface, and bore/hone for your pistons.) No need to line bore hone. Make sure the shop you choose has a tourqe plate for the 7M If they do not, find a shop that does, or that is willing to make one for your motor. I WOULD NOT BORE/HONE WITHOUT IT. Also do not HOT TANK your block. Just sonic clean it, or steam clean it. The acid in the hot tank will destroy your oil pump drive bearings, and you will have to replace them. It will also destroy your freeze plugs, so they have to be replaced. If you sonic clean the engine block, it comes out very clean, and none of the softer metals are ruined. (You will want to clean, and then re-clean your engine, make sure you flush out all oil passeges and any other place metal chips could hide, or grime resides.) A clean engine, is a happy and long lasting engine. Lastly, make sure you deck the block WITH THE FRONT COVER INSTALLED. If you don't, it's going to cause you a headache when the head sits up off the block because the front cover is now taller than your engine block. You need to cut them together to get the right height and seal correctly. (At the very least, it causes a serious oil leak on the front of your engine that can't be cured w/o removal and machine work on the cover. At worst, it causes warped heads, blown HG's and other crappy stuff.)

Good idea on some prices. (Most are estimates, or rounded UP.)
110 for the ARP Studs.
70 for the Comp Cams BBC inner valve springs. (IIRC part # 972?)
50 for the seals
50 for the gaskets
20 for the "Right Stuff"
Bearings are about 150
Timing belt 20.00
Misc. hoses and other stuff 100.00

Buy only the following gaskets. Intake, exhaust and metal head gasket. You will need new cam, front and rear main, and oil pump drive seals. Use "The Right Stuff" in the cheese whiz can to seal EVERYTHING ELSE. (You can just clean up your old valve cover seals, and then run a small bead of right stuff along the inside edge of the cam covers and seals. Then place them down on a clean head, and using allen head stainless bolts with lock washers and new neopre backed washers tighten them down. They will never leak if you seal them right.
Same with the MHG. Coat that sucker with brake quiet before you install it. (Coat the MHG on both sides with a few wet coats, then let it sit for about 10 min to get nice and tacky.) Then after putting a short bead of right stuff at the block to front cover mating surface, lay the gasket into place. (DO NOT HAVE ANY HEAD STUDS IN PLACE YET.) Then carefully place the head down on top of that. (Do not slide the head around at all. Use a friend to help place the head, it makes it easy.)

Now use your ARP studs to slip the washers into place on the head. I've found the best way to do this is lube the threads that go into the block with moly lube provided by ARP. A little lube goes a long way here. Lube the washer on both sides. Now, slip the washer onto the stud, and then place the stud into the hole on the head, and let the washer slide down into place. Then turn the stud into the block finger tight. Using a T handle allen wrench, just SNUG the stud, but DO NOT TIGHTEN IT. Repeat for all 14 of them. Then lube each threaded top of the studs, and the nuts that will be next. Remember to lube the face of the nut that contacts the washer that is laying on the head now. Turn them down till they are snug, but do not tourqe them yet. When they are all in place, get your 12 point 14mm socket and start your tourqe process. Follow the X pattern outlined in the TSRM. Start in the middle, and tourqe them to 30lbs over the head. Then I liked to go in 20lb steps to 90 lbs, and the final tourqe to about 103 or 105 depending on what you want. (90 lbs is actually plenty, but really I have not seen anyone with a problem at 105 yet.)

The key here is to do this in one step. Plan ahead and from the time you spray your MHG with the brake quiet, to the time you complete your tourqe patterns, it should not stop or delay in any way. You want the brake quiet to setup with the head fully tourqed into place. Make sure to prep your head and block with brake cleaner BEFORE you start. Also prep your MHG with brake cleaner too. It will clean off any oil or grease, and allow the brake quiet spray to stick to everything better. (Bare metal is what your going for.)

Same thing with sealing anyhing you use the right stuff on. Clean it up first, no assembly lube or oil should be on any mating surface before you apply the right stuff. This will ensure NO leaks later on.

If you shim your oil pump, also shim your oil cooler bypass. (With the same sized nut.)

I think the 7M is a very reliable engine when built right. It has many options now compared to just a few years ago. The 1JZ and 2JZ motors are also well supported by the AM, the 1JZ parts are not as easy to find, but they are out there if your willing to look. Every option has it's rewards and pitfalls. (That includes changing over to a domestic V8 v/s running something from Toyota in there.)

Good luck on your quest, and don't give up. (Also try your spelling checker next time on the SURPRAS.. sounds like some kind of cold drink at Sonic... I'd like a burger, fries and a Surpra please... Cherry if you have it.. :) )
 
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gmoney

supra is as stupid does!
Apr 22, 2005
97
0
0
41
CT
home1.myspace.com
That all sounds damn good! but i am not that good with engines to do all of that all i can say is thank you and i will be sure to bring all that info to my mechanic and make sure he does it all right. im not confident enough to rebuild an engine, but if i rebuild with conditioned rods, ross pistons, the minor head work that is suggested, the block work with stock cams and cam gears am i looking at any more HP to the engine or just a crap load of reliablilty? just want to know what im looking at! :1zhelp:
 

Spiv

hooligan
Mar 31, 2005
88
0
0
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Orlando, Fl
northsupra said:
7M, alot of parts at a reasonable price. Proven to substain high power levels and it has been pushed too (10800 rev limeter seb supra the ausie beast)

you wouldn't happen to have a link or more info on this car, would you? couldn't find a thing in the search about it...
 

figgie

Supramania Contributor
Mar 30, 2005
5,224
16
38
50
Twin Cities, Minnesot-ah
gmoney said:
That all sounds damn good! but i am not that good with engines to do all of that all i can say is thank you and i will be sure to bring all that info to my mechanic and make sure he does it all right. im not confident enough to rebuild an engine, but if i rebuild with conditioned rods, ross pistons, the minor head work that is suggested, the block work with stock cams and cam gears am i looking at any more HP to the engine or just a crap load of reliablilty? just want to know what im looking at! :1zhelp:

it all depends on how well it is put together (paying attention to Toyota TSRM specs) and how well you MAINTAIN it! ;) This will neither give you more HP (UNless you stroke it) OR turn up the boost or more reliability (see my above comments on staying to specs. What this WILL give you is SURVIVABILITY. Meaning that it might be able to sustain detonation longer than if stock or running more boost etc.
 

northsupra

Normally Insane
Mar 30, 2005
99
0
0
39
Norway
Spiv i have an article form a magazine that i saw over at sf and like every one else i got the dyno vid :)
 

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gmoney

supra is as stupid does!
Apr 22, 2005
97
0
0
41
CT
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what exactically needs to be done for the ross pistons to work right something about 3.5 or 4 i have no idea what that means but it sounds important and i would like to make sure that its done right!