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Location:
Sydney
Registered:
May 2002
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What lbs to Torque 7MGTE Head to?
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Wed, 25 December 2002 00:27
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I know i asked this question in the past, but since lost details. Doing a headgasket on a mates 7MGTE with brand new genuine Toyota Headgasket and a ARP stud kit. Need to know how tight to do it up as factory torque settings arent tight enough. Also need to know the best stages to pull it down at as i reach max torque.
Also wish to run about 15-18 PSI. Apart from fuel cut defender and fuel pump will any thing else need to be changed so the vulnerable 7M will survive?
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Location:
North Sydney
Registered:
May 2002
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Location:
Omaha NE USA
Registered:
December 2002
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Re: What lbs to Torque 7MGTE Head to?
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Wed, 25 December 2002 08:02
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you really maxed out your injectors at 11lbs? .. i ran 14lbs on stock injecotrs and fuel pump and had no problems w/ air fuel ratio's ... i did blow the head gasket on 5 and 6 but i think it was more to do w/ the overheating when i blew the water pump than any detonation oh well guess we will see when it goes back together next summer .. new HG, metal for sure this time (if i can find one to work w/ my o-rings)and a much bigger turbo t04e of some sort .... and the fuel system to match of course
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Location:
North Sydney
Registered:
May 2002
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Re: What lbs to Torque 7MGTE Head to?
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Wed, 25 December 2002 11:46
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I've done alot of work on the intake and exhaust accessories on my engine. It also has a t04e on it, so 14psi with all that work is alot more volume of air than a stock ct26 at 14psi with restricitve intake and exhaust.
I also have removed the afm. I've managed 300hp at the wheels with the original factory head gasket so about 360hp at the crank and thats with the old setup so i'm hoping for a fair bit more with the new 
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Location:
Lost in the K hole
Registered:
May 2002
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Re: What lbs to Torque 7MGTE Head to?
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Wed, 25 December 2002 14:28
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dont forget, when putting studs in, put them in with loctite stud stuff, and install by hand only. then put the head on and tourque it down, leave it torqued till the loctie sets, and then relax the torque right off. leave it for 24 hours or something.
then, when retorquing the final time, go in stages (at least three) approaching the final torque figure. leave tourqued at spec level (72ft/lbs) for 15 min, then back off 1/8 - 1/4 turn, and then torque again to 72ft/lbs.
remember, threads should be lubed, and all torque readings should be taken with the nut turnin smoothly.
cheers
ed
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Location:
Omaha NE USA
Registered:
December 2002
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Re: What lbs to Torque 7MGTE Head to?
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Wed, 25 December 2002 17:52
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okay it makes more sense after hearing the rest of your setup ...i have have a random technology DP and NUR catback so my exhaust if taken care of as for intake though i'm stock other than a universal filter on an HKS adapter .... i did manage to put down 250hp @ 11 lbs on a mustang style dyno though .. but i'm sure the t04e makes all the difference ... i can't wait to get mine back together
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Location:
North Sydney
Registered:
May 2002
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Re: What lbs to Torque 7MGTE Head to?
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Thu, 26 December 2002 05:16
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She'll be alot more fun with a decent turbo on it! Get ready for some kick in the pants after 3000rpm and it will just keep going all the way to redline. Completely different to stock 7mgte turbo which doesn't really even give you a punch and lay you into the seat. You'll have a ball with the T04E.
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Location:
Sydney
Registered:
May 2002
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Re: What lbs to Torque 7MGTE Head to?
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Thu, 26 December 2002 06:58
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Thanks for your advice guys. Also currently the CT26 has just been highflowed by GCG turbos, and exhaust system is 3" from turbo.
We dont expect miricals but dont want to change computers at this point in time. Assuming we buy a rising rate regulator, and torque the head down correctly with ARPs, what kind of boost should we be safley running? I didnt think 15psi was to unrealistic. Are we sure the factory management system wont be able to take it. Once again thanks guys, all advice is muchly appreciated.
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Location:
North Sydney
Registered:
May 2002
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Re: What lbs to Torque 7MGTE Head to?
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Thu, 26 December 2002 15:18
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You can run it on 15 but i wouldn't be running it for long. Run it at stock boost and have a boost controller to flick it to 15 for that once a month drag off the lights against 300kw Commonwhore's.
It's getting too tight with the ignition timing i feel. If you replaced the head gaket with a 2mm job then i would be more comfortable.
Also the 7mgte ECU doesn't really care how much boost in the intake manifold there is. It just measure's how much air goes through the AFM. The cooler the air the more boost will be resulted, the AFM just adds the subsequent fuel to the exact mass of air it sees go past.
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Registered:
July 2002
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Re: What lbs to Torque 7MGTE Head to?
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Fri, 27 December 2002 09:43
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i juat got the arp studs .... how do u torque them up i cant get a socket or nything in there onto the nuts! . is there a particular tool i need or something?
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Location:
Lost in the K hole
Registered:
May 2002
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Re: What lbs to Torque 7MGTE Head to?
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Fri, 27 December 2002 13:42
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you dont need to torque the studs... read my post above. but from memeory they have a 12 point standard socket fitting
ed
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Location:
Lost in the K hole
Registered:
May 2002
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Re: What lbs to Torque 7MGTE Head to?
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Fri, 27 December 2002 13:45
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ooops, misread.
the nuts themselves... also a 12pt socket?
cheers
ed
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Location:
Omaha NE USA
Registered:
December 2002
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Re: What lbs to Torque 7MGTE Head to?
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Fri, 27 December 2002 17:41
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Some of the people on the Supra email list (SOGI) have ahd problems fitting a socket in there to tighten them ... i think i used (been a while so i could be wrong) a 14mm 3/8 drive craftsman thin deep well 12 point socket ..... others claim they have had to grind down a socket to get it to work
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Registered:
July 2002
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Re: What lbs to Torque 7MGTE Head to?
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Fri, 27 December 2002 21:55
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well that seems abit silly then... ud think there would b a better way seeing as there disgned for this engine .... but ahwell to the shops to get a socket then!
thanks for that!
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I supported Toymods
Location:
Central Coast
Registered:
May 2002
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Re: What lbs to Torque 7MGTE Head to?
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Fri, 27 December 2002 23:57
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yes, we unfortunantly have come across this problem the hard way with a friend of mines MZ20... His dad is an engineer, so he is talking about gringing the metal around the holes on the head or something? I'll find out more in the next couple of days.
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Location:
North Sydney
Registered:
May 2002
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Re: What lbs to Torque 7MGTE Head to?
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Sat, 28 December 2002 04:11
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Arnt the head studs just 8or 10mm hex head bolts?
Or do you mean the ARP replacment ones?
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