[T3] Tight Engine

Tue Jul 31 17:52:06 PDT 2018

Its REALLY tight when it gets to operating temperature,
will barely crank fast enough to start it if you shut it off.
I have confidence in the bearing tolerances, the cylinder set has 900mi on
it so I dont think its that, could it be endplay?  if I dont have the .003 I

measured, would that do it?  I have about 25 miles on it now and its not
getting better but no bad noises either...  not sure if I should keep
driving it or pull it out,

Keith

Topnotch Restorations
topnotch at nycap.rr.com
http://www.topnotchresto.com
71 Squareback  "Hothe"
65 Notchback  "El Baja Rojo"
93 RX7  "Redstur"
95 Chrysler Cirrus Lxi "Cirfogsalot"
"hanging out at the tail end of the bell
curve, and loving every minute of it!" 
-----Original Message-----
From: type3-vwtype3.org [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org]
On Behalf Of Brion Sabbatino
Sent: Monday, July 30, 2018 11:24 PM
To: type3 at vwtype3.org
Subject: Re: [T3] Tight Engine

I don't know. It seems take a lot of miles to properly seat the rings. Every
engine is different.

The new engine's compression is higher/tighter. That makes for more
resistance when manually turning it over.

We all seem to over think every aspect instead of just letting go.

Get Outlook for Android<https://aka.ms/ghei36>

________________________________
From: type3-vwtype3.org <type3-vwtype3.org-bounces at lists.vwtype3.org> on
behalf of Keith Park <topnotch at nycap.rr.com>
Sent: Monday, July 30, 2018 7:51:22 PM
To: type3 at vwtype3.org
Subject: Re: [T3] Tight Engine

Yes, I was careful when I went thru the bearings to make sure everything was
right, crank and case was from the previous build so they have been used
before,.003 endplay, seems fine when cold anyway.

Keith

Topnotch Restorations
topnotch at nycap.rr.com
https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.topnotc
hresto.com&data=02%7C01%7C%7C4011055967704f14ccf208d5f68821a6%7C84df9e7f
e9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636685986888141956&sdata=Ge7kLTwsyKwa
NEHiUXEDfWthecIEzRkgpkNY14LySvs%3D&reserved=0
71 Squareback  "Hothe"
65 Notchback  "El Baja Rojo"
93 RX7  "Redstur"
95 Chrysler Cirrus Lxi "Cirfogsalot"
"hanging out at the tail end of the bell
curve, and loving every minute of it!"

-----Original Message-----
From: type3-vwtype3.org [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org]
On Behalf Of donrob at yachtsales.com
Sent: Monday, July 30, 2018 9:37 PM
To: type3 at vwtype3.org
Subject: [T3] Tight Engine

In my experience tightness in an engine is almost always caused by some
sort of crankshaft issue.  Did your crankshaft spin easily before you
hooked up the rods?

Don Robertson
905 566-0000 (cell)
donrob at fastmail.com

On 2018-07-30 21:07, Keith Park wrote:
> Well I managed to get the muffler on, with some persuasion and a hot
> wrench.
>
> with the new T4 in it it actually runs a lot better than I thought it
> would
> before I start to tune.
>
> This time I'm running a T3 048 E brain from a 73 with matching pressure
> sensor, modified to adjust.
>
> with the larger 2L injectors the entire curve is richer than stock T3
> so I
> was hoping it would be "close enough" to tweak in
>
> with the pressure sensor.
>
>
>
> Ive only driven it a few miles, the mixture at light to moderate
> throttle is
> reasonable, but when I put my foot down harder
>
> the mixture leans out considerably to and AFR of 15 to 16, kinda like
> the
> opposite of what Id like to see happen and what
>
> happened with the C based system I had on it years ago.
>
>
>
> now remind me... what gives the full load enrichment on the stock 73 T3
> injection? I remember it being an extra pin
>
> on the throttle switch, but is that it?  you wont hit that till your
> floored.
>
>
>
> Motor seems a bit "tight" when hot, the cylinders and pistons have 900
> miles
> on them from the previous build,
>
> how long does it take to "loosen up"?  I don't remember it being so
> tight...
> I can turn it over with a screwdriver
>
> but it sure aint as loose as the last engine was.
>
>
>
> Whew!  good to have it back, but I need to get the full load enrichment
> figured out.
>
>
>
> Topnotch Restorations
>
> topnotch at nycap.rr.com
>
>
https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.topnotc
hresto.com&data=02%7C01%7C%7C4011055967704f14ccf208d5f68821a6%7C84df9e7f
e9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636685986888141956&sdata=Ge7kLTwsyKwa
NEHiUXEDfWthecIEzRkgpkNY14LySvs%3D&reserved=0
>
> 71 Squareback  "Hothe"
> 65 Notchback  "El Baja Rojo"
>
> 93 RX7  "Redstur"
>
> 95 Chrysler Cirrus Lxi "Cirfogsalot"
>
> "hanging out at the tail end of the bell
>
> curve, and loving every minute of it!"
>
>
>
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