New engine build

chitwnvw · Post by **chitwnvw** » Fri May 09, 2008 6:55 pm

Amskeptic wrote: BEFORE YOU ALL START DRILLING OUT YER DAMN THROTTLE PLATES, how about if we let your poor engines break in?

I was waiting for that. I don't know how I knew it was coming.

Post by **Amskeptic** » Fri May 09, 2008 7:06 pm

I am getting predictable, I guess.
But sometimes I see fevers of engineering "enhancements" overtake people, in lieu of careful consideration.

A cold engine that reads lean but smells rich? How about condensation of fuel? It needs to warm up all the surfaces in the intake combustion chambers and exhaust system before the sniffer can give you an accurate reading. Your nose can smell a pool of gasoline, but that gas won't burn until it is a combustible vapor. The sniffer isn't going to read the fuel condensation but your nose can. If you have cold running issues beyond the first few minutes, sure, investigate, add metered air via the AAR, play with a TempSensor II resistor, but don't get too excited and start dumping unwanted gas into the engine when it is cold. Muir was half right, you know.
Colin

chitwnvw · Post by **chitwnvw** » Fri May 09, 2008 7:18 pm

Slow and steady wins the race.

germansupplyscott · Post by **germansupplyscott** » Sat May 10, 2008 12:24 pm

Amskeptic wrote:BEFORE YOU ALL START DRILLING OUT YER DAMN THROTTLE PLATES, how about if we let your poor engines break in?

there are factory bus engines with a hole in the plate. i can provide the part number if you like, so no throttle plates are harmed.

the low idle is an issue with certain engine combos and we've seen the same behavior too, even after the engine has loosened up. i believe it has to do with the camshaft characteristics as they relate to the factory injection system.

vwlover77 · Post by **vwlover77** » Sat May 10, 2008 5:33 pm

But how does a hole in the throttle plate increase the cold idle speed without also increasing the warm idle speed?

I have not heard anyone complain that they have reached the limit of the idle adjustment screw.

Am I missing something here?

hambone · Post by **hambone** » Sun May 11, 2008 7:28 am

Let that sucker break in before ya get your panties in a bunch.

LiveonJG · Post by **LiveonJG** » Sun May 11, 2008 11:59 am

hambone wrote:Let that sucker break in before ya get your panties in a bunch.

Good advice, just remember how hard it can be to get wrinkles out of lace.

-John

hambone · Post by **hambone** » Sun May 11, 2008 12:07 pm

Not to mention fine silk.......

Westy78 · Post by **Westy78** » Sun May 11, 2008 4:28 pm

LiveonJG wrote:
hambone wrote:Let that sucker break in before ya get your panties in a bunch.
Good advice, just remember how hard it can be to get wrinkles out of lace.

-John

Oh, this'n here's got a good mem'ry.

Anyway, the first trip is successfully under the belt. Only about 200 miles but it ran great. Had to stop and dial in a couple more clicks towards rich on the potentiometer to get the temps into a more comfortable zone cruising on the highway at 65 but other than that no issues. Mileage ended up at just over 15mpg. Not great, but for a fresh tight engine running on the rich side, cruising at 65 and climbing a few hills, not bad either. The engine now has about 500 miles on it. Feels good to back on the road.

Westy78 · Post by **Westy78** » Sun May 11, 2008 4:32 pm

germansupplyscott wrote:
Amskeptic wrote:BEFORE YOU ALL START DRILLING OUT YER DAMN THROTTLE PLATES, how about if we let your poor engines break in?
there are factory bus engines with a hole in the plate. i can provide the part number if you like, so no throttle plates are harmed.

the low idle is an issue with certain engine combos and we've seen the same behavior too, even after the engine has loosened up. i believe it has to do with the camshaft characteristics as they relate to the factory injection system.

Scott, these particular throttle bodies with the hole in the plate aren't available anymore are they? Is this problem you've seen on warm idle also or just when cold?

spiffy · Post by **spiffy** » Mon May 12, 2008 5:52 pm

Nice video! Ya'll keep getting faster and I keep getting slower.

hambone · Post by **hambone** » Sun Jan 18, 2009 10:41 pm

So here we are, after this fine drama unfolded. How about a report? Lay it down, 1976 Road and Track style.

Westy78 · Post by **Westy78** » Sun Jan 18, 2009 11:08 pm

Soon my little Hammy, after the new exhaust is installed. Hopefully by next weekend. It's out being ceramic coated as I type.

tristessa · Post by **tristessa** » Sun Jan 18, 2009 11:31 pm

Westy78 wrote:Soon my little Hammy, after the new exhaust is installed. Hopefully by next weekend. It's out being ceramic coated as I type.

.. so what'd that set you back, if I might ask? Haven't been to the ceramic coaters in years, and I wasn't paying the bills anyway .. just playing errand boy.

Westy78 · Post by **Westy78** » Mon Jan 19, 2009 5:38 pm

tristessa wrote:
Westy78 wrote:Soon my little Hammy, after the new exhaust is installed. Hopefully by next weekend. It's out being ceramic coated as I type.
.. so what'd that set you back, if I might ask? Haven't been to the ceramic coaters in years, and I wasn't paying the bills anyway .. just playing errand boy.

More than I wanted. Quoted $235 but for the price I paid for the header I want it to last. They do one interior coat and two exterior. Should last quite a few years hopefully.

Itinerant Air-Cooled

Itinerant Air-Cooled

New engine build