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Stock Boost SUX
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1,660 Posts
Mines an 89 and its 6500. I think from 90 to 92 is 6250.
 

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when this baby hits 88mph
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2,198 Posts
TomBSupraT said:
89 is a mystery cause some came with 7m cranks and some with the 6m i think
tis true. i should have made more clear. 89 was a strange year. they have 3 different engine harness and diff cranks depending on which part of the year it was built.
thanks
 

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Registered
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206 Posts
Can you list those times/redlines?
 

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2005 LP640
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930 Posts
early 89's had the 6M crank with the 6,500rpm redline, with the later production date 89's had the 7M crank with the 6,250rpm.

Thats what I've gathered at least.
 

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1,317 Posts
86.5-88 had 6m crank with 6500 redline
89 had 6m(6500) and 7m crank(6250)
90-92 had 7m crank with 6250 redline
 

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Dr. Jeff Lange
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9,352 Posts
Can someone post their 89 car with a 6250 redline? I'm just looking at the EPC here, and I've noticed a few things of interest:

First, the only 89's to get the old style crossmember and engine mounts are the ones made from 8/88 to 12/88, from 1/89 on, they all had the round mounts.

Second, there is no 3.91 gear set listed for 89+ by Toyota, so they all had 3.73 (SuprAng I think it was was saying he had a stock 89 with a 3.91 rear end).

Anyhow, the most important, is that the EPC lists the 6M crank for all of 89, and says the 7M started in 1990... which I was pretty sure wasn't true, but if someone could help me out with a production month of their 89 with a 7M crank, that'd be great.
 

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Dr. Jeff Lange
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9,352 Posts
Import_Eve said:
Intresting... Gonna go and try the 89 and see where it Redline. I usually shift at 6000RPM so i don't know.
Not talking about the rev limit, talking about the redline, where it actually shows on the tach. The rev limit is 250rpm above that I believe.
 

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512RWHP... 503RWTQ... 7M
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3,292 Posts
So, the 6M crank is lighter than the 7M crank? Is that why it can rev higher?
 

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Dr. Jeff Lange
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9,352 Posts
Reign_Maker said:
So, the 6M crank is lighter than the 7M crank? Is that why it can rev higher?
Yes, 5lbs lighter.
 

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Super Moderator
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10,165 Posts
A friend and I just parted out an '89T automatic with a 1/89 production tag that had square mounts. G305 diff, 6500rpm redline.
My personal red '89T is a 3/89 car with a 6500rpm redline, round mounts and G305 diff.
 

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Dr. Jeff Lange
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9,352 Posts
Wreckless said:
A friend and I just parted out an '89T automatic with a 1/89 production tag that had square mounts. G305 diff, 6500rpm redline.
My personal red '89T is a 3/89 car with a 6500rpm redline, round mounts and G305 diff.
Yeah I've actually been trying to figure out how Toyota does the dating in the EPC.

They'll list it like this:

8601-8708 for 1 part, then an updated part will be 8708-9008... Now it makes sense that the first one is 86-87, and the second is 88-90, but... I'm pretty sure (almost positive) that the 8708-9008 covers 8708, and that the 8601-8708 leads up to, but does not include 8708... (like I said I am almost 100% positive that's the way it's done). That's the way I assumed they did it for the mounts as well.

They list the square mounts for 8601-8901 and the round mounts for 8901-9305. But if you have a friend with a 1/89 car with square mounts, that's weird, but Toyota did mess around a lot in 89, lol.
 

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Super Moderator
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I guess that means that '89T auto might have been the last square mount MK3.
Shame the previous owner drove it into a tree, lol.
My silver '87 is sure looking forward to wearing her trim either way...
 

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Dr. Jeff Lange
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9,352 Posts
Reign_Maker said:
Is square mount better than round mount?
Supposedly they break less, but the round mounts damp more engine vibrations... take your pick.
 
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