[Supras] mk3 block differences?

[Harley]

I'm afraid of hitting 6k. Shifting at 4k is pushing it for me. I really 
don't want somethin to happen my motor. I know for sure though that my motor 
can use a balance. When I first bought my supra several years ago when it 
had 115k on it, it would redline at about 7k no problem. Since then though I 
have had a spun bearring, a BHG, and several turbos.
----- Original Message ----- 
From: "Sean Cavanaugh" <millenia2000 at hotmail.com>
To: "Walker2, Brian (Rich. Dist)" <brian.walker2 at vdot.virginia.gov>; 
<dave at azsupras.com>; <supras at supras.com>; <psantos at cfl.rr.com>; 
<jonbhacker at yahoo.com>
Sent: Monday, April 16, 2007 6:11 AM
Subject: Re: [Supras] mk3 block differences?


I thought reliable revs was why they went to the fully counterweighted 7M 
crank from the previous 6M crank.
as for balancing, theres nothing keeping the engine from hitting 7k or more 
revs with a properly balanced rotating assembly. my NA hit 6500 with no 
modifications. You will most likely need aftermarket rods and pistons to hit 
really high revs though.

I think I even saw some guy who had a 2JZ that had about a 9k redline 
(needless to say he sank some money into building the engine)-Sean



> Date: Mon, 16 Apr 2007 08:47:28 -0400> From: 
> Brian.Walker2 at VDOT.Virginia.gov> To: dave at azsupras.com; supras at supras.com; 
> psantos at cfl.rr.com; jonbhacker at yahoo.com> Subject: Re: [Supras] mk3 block 
> differences?> > > This was also when Toyota dropped the redline back by 
> 250(?) Rpms. I> wonder why they made these changes? Anyone happen to get a 
> weight> comparison? Most of the failures I've heard of were detonation, 
> etc.> related. As far as I know they've always taken revving pretty well 
> when> properly assembled correct? (reasonable revs, not 9k)> > Have you 
> guys been able to balance and get reliable revs around 7k?> > Thanks,> 
> Brian> > Date: Sun, 15 Apr 2007 02:00:39 -0700> From: "Dave Koos" 
> <dave at azsupras.com>> Subject: Re: [Supras] mk3 block differences?> To: 
> "Peter" <psantos at cfl.rr.com>, "SOGI" <Supras at supras.com>> Cc: 
> jonbhacker at yahoo.com> Message-ID: <004a01c77f3c$8a1b2ab0$cb996844 at nyzzle>> 
> Content-Type: text/plain; charset="iso-8859-1"> > I looked through 
> pictures of a couple 7Ms I've helped rebuild over the> last couple of 
> years and it seems like Toyota started to beef them up> for the 1989 model 
> year in both turbo AND non-turbo form! I have pics> from an '89 non-turbo 
> that show the extra ribbing on the outside and> thickness on the inside by 
> the crank.> > E-mail me at dave at azsupras.com for pics.> > HTH,> > Dave 92T 
> & 84 P-type> Mesa, AZ> www.azsupras.com/suprattop.htm> www.azsupras.com> > 
>  > > _______________________________________________> Supras mailing list> 
> Supras at supras.com> http://supras.com/mailman/listinfo/supras_supras.com
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