DYNO


Information and questions on GL1100 Goldwings (1980-1983)
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1fastgl1100
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Motorcycle: 1983 GL1100A and 1982 GL1100A Modified

DYNO

Postby 1fastgl1100 » Fri Feb 07, 2014 7:08 am



broke down and took my 83 GL to local Dyno Guy and hooked it all up.. from factory this bike should have 85 horses.. after some tweeks (including shaving heads and cleaning valve seats, high performance clutch and clutch basket) bike was dynoed at 96 horses at the rear wheel.
Does anyone know if the factory rating was at wheel, output shaft or just an estimate from Honda?



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RoadRogue
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Re: DYNO

Postby RoadRogue » Sat Feb 08, 2014 10:28 pm

Just how much did you shave off the heads? 8-)
Ride safe, Todd
Over night campers welcome

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1fastgl1100
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Re: DYNO

Postby 1fastgl1100 » Sun Feb 09, 2014 7:30 am

RoadRogue wrote:Just how much did you shave off the heads? 8-)


Had local motorcycle machine shop do it, I dont know exactly maybe 1/10,000

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NKYWinger
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Motorcycle: 1983 GL1100A Aspencade
2003 GL1800

Re: DYNO

Postby NKYWinger » Tue Feb 11, 2014 10:12 am

This is something I was considering to try and get a few more HP. Do you now have to use 93 octane to take advantage of the higher compression?
:?: I'm wondering just how much you can actually shave the heads without running into interference problems....

Anyone know the answer???????
--John--

FTCS(SS) USN Ret.
'83 GL1100 Aspy (SOLD)
'03 GL1800
'08 Lees-ure Lite
GWRRA 339547 KY - 'G'
DS# 1547

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1fastgl1100
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Re: DYNO

Postby 1fastgl1100 » Tue Feb 11, 2014 4:37 pm

NKYWinger wrote:This is something I was considering to try and get a few more HP. Do you now have to use 93 octane to take advantage of the higher compression?
:?: I'm wondering just how much you can actually shave the heads without running into interference problems....

Anyone know the answer???????


All the local machine shop would do is gust a single pass to true up the heads. the amount taken was very little. I think the big improvement was the truing up of the valves and making sure valves got a good seat.
I am also running NGK Iridium plugs which seems to make a big difference. I would like to try swapping to a single 2Brl carb or even to a 4Brl carb and see if cant get a few extra that way.

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NKYWinger
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2003 GL1800

Re: DYNO

Postby NKYWinger » Wed Feb 12, 2014 7:02 am

the big improvement was the truing up of the valves
I don't understand that term - do you mean a good 3 angle valve job and lapping the seats?
--John--

FTCS(SS) USN Ret.
'83 GL1100 Aspy (SOLD)
'03 GL1800
'08 Lees-ure Lite
GWRRA 339547 KY - 'G'
DS# 1547

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SteveB123
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Motorcycle: 1982 1100I, 60A Poorboy, MSD coil

Re: DYNO

Postby SteveB123 » Wed Feb 12, 2014 7:13 am

Did you do a baseline run, to be able to discern the actual change?
Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing

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1fastgl1100
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Re: DYNO

Postby 1fastgl1100 » Mon Feb 17, 2014 7:17 am

SteveB123 wrote:Did you do a baseline run, to be able to discern the actual change?


No sorry. at the time the Dyno was not up and running in my area.

shop swapped out valves for new ones and machined the seats to give the best contact. the also replaces guides, springs and seals. he only made a single pass at 1/10,000 on an inch to true up the head.
He also cleaned the spark seat which had pitting from poor care by the last owner and was allowing some blow by.

Carbs were also rebuilt by a local shop and new jets installed, he told me they looked good just old and in need of a good cleaning. Re jetted to give more power.
I still run 87 octain pump gas, but may switch to 93. I drove truck for several years delivering Gas and know that the tankers are never cleaned. one run is 87 octaine the next is 93 the next Diesel and you can imagine what that does to the fuel on the next load.

Now I have local shop working on the neck bearings to try to get rid of the death wobble I get at 140mph. should be done later today.

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dingdong
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Re: DYNO

Postby dingdong » Mon Feb 17, 2014 8:22 am

"Re-jetted to give more power." Any idea what the mechanic did? In most cases these old girls don't like changes to the jetting. Usually makes them run too rich or to lean, depending on the direction he went with the jets. Might want to keep an eye on the plugs.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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1fastgl1100
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Re: DYNO

Postby 1fastgl1100 » Wed Feb 19, 2014 4:22 pm

Running a bit richer at higher RPM. since we swapped out standard plugs for Iridium plugs fouling is very limited. going to try a speed run this weekend if I am not to busy.

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SteveB123
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Re: DYNO

Postby SteveB123 » Wed Feb 19, 2014 7:13 pm

1fastgl1100 wrote:
SteveB123 wrote:Did you do a baseline run, to be able to discern the actual change?


No sorry. at the time the Dyno was not up and running in my area.

I drove truck for several years delivering Gas and know that the tankers are never cleaned. one run is 87 octaine the next is 93 the next Diesel and you can imagine what that does to the fuel on the next load.
[quote]

I'm a licensed Petroleum Mechanic, and design, inspect, trouble-shoot and work on fueling (and fuel) systems all day. Only get contaminated fuel when *ahem* a driver drops in the wrong hole. Then they call us to blow it back, from the UST back into their truck. It's slow and profitable. :D
The residual fuel left in a tank after draining amounts to a litre or two, in a tank of 25-30 THOUSAND litres. Even a split tank of 5K...that's not anything to get excited about.
It's all fuel. Hell, lots of people add Diesel, ATF or whatever to their olde bykes on purpose!

cheers.


Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
Previous: 93 GSX1100F Katana
82 GL500 Silverwing


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