[Supras] Awesome!

[berniek at technicaldevelop.com]

Brian:  Thanks for the thought.  All the engine needed were rings and
valves.  It was actually in quite usable condition (excepet for need to
deck the block and surface the head).  In some respects I could not resist
the temptation to keep my foot off the loud pedal.  But everything seems
OK, with the exception that I might have more boost than I thought (to be
posted in about 5 minutes to the group.

Bernie


> I was just checking Bernie, I was thinking you'd need quite a few miles
> to seat the rings. We did a similar rebuild (patch job) on my engine and
> I did a lot of accel/deccel to help seat the rings (not sure that's the
> appropriate term but applying press. and vac. over and over) Also
> replaced bearings and did a valve job so I felt like a fair amount of
> miles (and couple oil changes) would be necessary, maybe it's not the
> case with rings only. I thought you had done a complete rebuild, even
> new cars recommend a couple thousand miles before hard use/towing (it's
> a shame they're aren't treated that way during test drives and by the
> lot lizards)
>
> -----Original Message-----
> From: berniek at technicaldevelop.com [mailto:berniek at technicaldevelop.com]
>
> Sent: Wednesday, October 31, 2007 10:34 PM
> To: Walker, Brian (Rich. Dist)
> Cc: Supras at supras.com
> Subject: Re: [Supras] Awesome!
>
> Brian:
>
>     Actually all I really did to the engine internally was light honing,
> re-ringing, and lapping the valves.  Also made spring shims from washers
> to get the installed spring height a small bit less than the stock spec.
> I did move the oil pickup back in the pan, but that has nothing to do
> with  breakin, of course.
>
>
>      From the first time I got the engine running, there was no smoke,
> no signs of the rings needing to seat.  Piston clearance, if anything,
> is greater than stock due to the honing.  Also, no codes were set by the
> ECU.  Presently I have the original Lex screw about halfway in and the
> fuel pressure set to just under 40 PSI (reading with the engine off,
> since the fuel system is tight and holds pressure I can read it that
> way).
>
>
>     As always, any comments would be appreciated.  Thanks for the
> interest.
>
>
>           Bernie
>
> Walker, Brian (Rich. Dist) wrote:
>>
>> Bernie, glad you are enjoying the car being back on the road but if
>> I'm reading this correctly you only have 75 miles on the engine and
>> have broken the rear wheels loose already? I'm hoping this isn't a
>> newly built engine.
>>
>> Brian
>>
>> Date: Wed, 31 Oct 2007 11:30:06 -0500 (EST)
>> From: berniek at technicaldevelop.com
>> Subject: [Supras] Awesome!
>> To: supras at supras.com
>> Message-ID:
>>
>> <54284.67.132.75.97.1193848206.squirrel at www.technicaldevelop.com>
>> Content-Type: text/plain;charset=iso-8859-1
>>
>> Just installed a simple ball and spring boost controller last night,
>> with a small bleed built in (Dawes).  Bench set it to about 10-12 PSI.
>
>> Took the car out this morning, and when it got into boost, it broke
>> the rear tires loose in second gear!  Mods are:  500cc Greddy, Lex
>> AFM, Cometic HG, ARP studs, HKS air filter (will upgrade to one with
>> better filtration), modified stock FPR, Walbro, RT 3" downpipe and
>> cat, 80 mm HKS exhaust, moved oil pickup 3'1/2" further back in pan.
>> Boost signal is being taken from 3000 pipe, so real boost may be 15
>> PSI.  Did not upgrade intercooler piping yet, but smoothed entry to
>> 3000 pipe and cast elbow underneath with die grinder.
>>
>> Still need to install AFR meter, new power antenna mast, windshield
>> washer pump, and a few other things.  Until the AFR meter is in, I'm
>> just doing short bursts past 6 PSI, followed by overrun to lube
>> cylinder walls.
>> Have
>> 75 miles on engine.  Also intend to recalibrate stock boost sensor
>> with resistive voltage divider at output, so can use stock electric
>> gauge on dash (will also recalibrate scale at some time).
>>
>> Wheels are late MkIV, with 17" X 9" rears with 275-40-17 Bridgestones.
>>
>>      BernieK
>>
>>
>