Date: Wed, 1 Apr 2020 17:46:38 -0700
Reply-To: Neil N <musomuso@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Neil N <musomuso@GMAIL.COM>
Subject: Re: New engine, was Re: Ecu fix addendum
In-Reply-To: <SN6PR10MB289412824BDD1366D45DA2CAA0C60@SN6PR10MB2894.namprd10.prod.outlook.com>
Content-Type: text/plain; charset="UTF-8"
Right. Thanks Dennis. I recall now what the purpose of that "valve"
is, or was in my case.
Bad memories? Ha. Ya, gotta say though that these ABA engines appear
to be pretty tough. But the rest of the systems, other cars, meh, what
do I know? haha.
I'd been meaning to do a compression test on the engine I rebuilt, the
one with the initial rough idle engine cold. It has noticeably better
acceleration, especially under significant load, than the other van
with ABA which has ?? many miles on the engine now. I've "beat" it
pretty hard since 2008 or so. I have to wonder if the MAF on that
engine is failing. Anyhow......
AFAIK, gearing, tire OD is the same between both vans.
Neil.
On 4/1/20, Dennis Haynes <d23haynes57@hotmail.com> wrote:
> That vacuum diagram brings back bad memories of vehicles from that time
> period. It looks like part of that plumbing was for maybe a thermostatic
> damper in the air filter to get pre heated air for the intake during cold
> weather and possibly connected to bleed off or partly disable the EGR valve
> during warm up or cold weather operation. These engines used EGR both for
> NOx reduction and to control pre-ignition.
>
> A leak down and compression test should be able to prove out if you have a
> valve issue or not.
>
> Dennis
>
>
>
> -----Original Message-----
> From: Neil N [mailto:musomuso@gmail.com]
> Sent: Wednesday, April 1, 2020 7:51 PM
> To: Dennis Haynes <d23haynes57@hotmail.com>
> Cc: vanagon@GERRY.VANAGON.COM
> Subject: Re: New engine, was Re: Ecu fix addendum
>
> > ...... air cleaner so rough idle *may* be due to a lack of.....
>
> .... valve, or whatever it is, that 27 attaches to.
>
> Neil.
>
> On 4/1/20, Neil N <musomuso@gmail.com> wrote:
>> Reasons for wondering if head needs new parts, valve lapping:
>>
>> - engine had 250K KM"s, maybe more, looked like it had a tough life
>> (lots of oil leaks, piston skirts quite scuffed)
>> - first start engine cold, it idles rough for about 30 seconds. Cause:
>> lazy or leaking down lifter? Once warmed up, it idles fine.
>> - machine shop checked valve(s) seal using compressed air. Was test
>> thorough?
>> - I replaced all bearings, rings, pistons so seems a shame I didn't
>> rebuild the head too.
>>
>> My '81 and '88 Vanagons have the same ABA 2.0 swap. The '81 has always
>> idled a bit rough after first start for about 5 - 10 seconds but the
>> '88 behaves much differently in that regard. Neither uses the ABA 2.0
>> air cleaner so rough idle *may* be due to a lack of the 27 valve shown
>> in this diagram
>>
>> https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftiny
>> url.com%2Ftypy8zc&data=02%7C01%7C%7C2fdc01192222462b0a4c08d7d69779
>> a1%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637213818369332708&
>> ;sdata=qBPB6kbd8ewKoT2xG0rA1X3mI%2BhNkPrzOsTF6PCpFh4%3D&reserved=0
>>
>> All that said, the engine has good acceleration and power albeit with
>> a rare intermittent stall when coming to a stop.
>>
>> Neil.
>>
>> On 4/1/20, Dennis Haynes <d23haynes57@hotmail.com> wrote:
>>
>>> Why? Do you suspect or have a valve issue? I've seen my share of
>>> rings and piston issues with these motors.
>>> Dennis
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
>>> Behalf Of Neil N
>>> Sent: Wednesday, April 1, 2020 2:03 PM
>>> To: vanagon@GERRY.VANAGON.COM
>>> Subject: Re: New engine, was Re: Ecu fix addendum
>>>
>>> On 4/1/20, Neil N <musomuso@gmail.com> wrote:
>>>
>>>> .... Of note, I regret not having the head re-valved on my ABA
>>>> rebuild .....
>>>
>>> Meaning: new lifters, possibly valves or at least lap them, machine
>>> as needed.
>>>
>>>
>>
>> --
>> Neil n
>>
>> VE7TBN
>>
>> 1988 Westy 50º ABA swap:
>> https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftiny
>> url.com%2Fyap5hpwt&data=02%7C01%7C%7C2fdc01192222462b0a4c08d7d6977
>> 9a1%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637213818369342704&am
>> p;sdata=83HGm%2FVaCkdcCRzh%2F4PAHhBOEk1pFlMLcg%2FrvnjJsk0%3D&reser
>> ved=0
>>
>> 1981 Westy 15º ABA swap:
>> https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftiny
>> url.com%2Fy9n4xob8&data=02%7C01%7C%7C2fdc01192222462b0a4c08d7d6977
>> 9a1%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637213818369342704&am
>> p;sdata=0lgxomS%2BGrzVItgVuKWtBlzcQJhQeqLgC9fp6PkelzY%3D&reserved=
>> 0
>>
>> VAG Gas Engine Swap Group
>> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Ftiny
>> url.com%2Fkhalbay&data=02%7C01%7C%7C2fdc01192222462b0a4c08d7d69779
>> a1%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637213818369342704&
>> ;sdata=T6oso1gtjSQgx%2FVDFSn8Wpe4rcV3%2BhmEJ9OAbhCDtdU%3D&reserved
>> =0>
>>
>
>
> --
> Neil n
>
> VE7TBN
>
> 1988 Westy 50º ABA swap:
> https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftinyurl.com%2Fyap5hpwt&data=02%7C01%7C%7C2fdc01192222462b0a4c08d7d69779a1%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637213818369342704&sdata=83HGm%2FVaCkdcCRzh%2F4PAHhBOEk1pFlMLcg%2FrvnjJsk0%3D&reserved=0
>
> 1981 Westy 15º ABA swap:
> https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftinyurl.com%2Fy9n4xob8&data=02%7C01%7C%7C2fdc01192222462b0a4c08d7d69779a1%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637213818369342704&sdata=0lgxomS%2BGrzVItgVuKWtBlzcQJhQeqLgC9fp6PkelzY%3D&reserved=0
>
> VAG Gas Engine Swap Group
> <https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Ftinyurl.com%2Fkhalbay&data=02%7C01%7C%7C2fdc01192222462b0a4c08d7d69779a1%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637213818369342704&sdata=T6oso1gtjSQgx%2FVDFSn8Wpe4rcV3%2BhmEJ9OAbhCDtdU%3D&reserved=0>
>
--
Neil n
VE7TBN
1988 Westy 50º ABA swap: https://tinyurl.com/yap5hpwt
1981 Westy 15º ABA swap: https://tinyurl.com/y9n4xob8
VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>
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