TOP END REFINISHING

[Bearly Flying]

Schrade; I have the screws and secondary throttle plates I recently removed from my 91.

If you need some shoot me a PM with your address.

[Schrade]

Originally Posted by Bearly Flying

Schrade; I have the screws and secondary throttle plates I recently removed from my 91.

If you need some shoot me a PM with your address.

PM en route there BF...

[Franke]

I don't think so Schrade as I had 5 holes in mine and didn't experience hesitation. If I remember correctly that bottom hose goes to the IH to pull crankcase vapors.

[Schrade]

Still thinkin' on this throttle hesitation here...

If [since] 80% throttle opening comes from ONLY [ < 20%, actually] physical Range Of Motion OF THROTTLE LINKAGE ...



https://lh6.googleusercontent.com/-D.../HPIM7334c.JPG

then EVERY operational parameter has almost 0 tolerance for deviation, from 0% Throttle Opening, to 80% Throttle Opening, when 80% throttle is reached in such a short span.

There HAS TO be some 'buffer' integrated into all parameters' sync'ing properly; otherwise, every 1 year-old LT5 with even minor hardware degradation is gonna' have some problem...

such as 'Off-Idle Sag'

unless the potentiometer in the TPS has some buffer mechanism built-in, such as logarithmic resistance, and not linear (never mind just now that FSM says that the TPS Voltage response is linear..................... )

This make any sense to anyone?

[Schrade]

Any one here given this any thought?

Originally Posted by Schrade

Still thinkin' on this throttle hesitation here...

If [since] 80% throttle opening comes from ONLY [ < 20%, actually] physical Range Of Motion OF THROTTLE LINKAGE ...

then



https://lh6.googleusercontent.com/-D.../HPIM7334c.JPG

then

EVERY operational parameter has almost 0 tolerance for deviation, from 0% Throttle Opening, to 80% Throttle Opening, considering that 80% throttle is reached in such a short span.

There HAS TO be some 'buffer' integrated into all parameters' synchronizing properly; otherwise, every 1 year-old LT5 with even minor hardware degradation is gonna' have some problem...

such as 'Off-Idle Sag'

unless the potentiometer in the TPS has some buffer mechanism built-in, such as logarithmic resistance, and not linear (never mind just now that FSM says that the TPS Voltage response is linear..................... )

This make any sense to anyone?

[Schrade]

I saw a couple of them &*%$ers tryin' to dodge the rag, and I know there's more of 'em hidin' in there...



so I introduced 'em to Mr. Shop-Vac. They didn't look happy gettin' bounced from that party either, goin' through the tube

[Schrade]

Sink (loosely) the last 2 bolts, at the Alt-to-IH bracket, make sure everybody is happy (note to self - don't forget to lock down the Alt bolt)

and how 'bout that custom snapped off IAC locking tang (inset; upper right); should be good for a few HP???

I don't know WHAT to do about that...

[Schrade]

Hose end after wire wheel (NOT over rail!!! )

look ok Cliff ?

[Schrade]

So set the P side IH.

Blot the head surface with a paper towel:

clean (Jerry said DRY, no thin grease film, as I'm accustomed)



Set the gasket; make sure they're aligned with a Phillips head (WTH is Phillips anyway? )

[efnfast]