914World.com > Headers 1.7 VS 2.0!?

den_914

Apr 12 2012, 12:51 PM

Hi There,

I want to know the difference about the headers of a 1.7L engine vs a 2.0l. I have a 2.0l in my 914 and my old headers of my old 1.7 engine and I notice a overheat and I think its due to the headers of the 1.7l. Do I have right?

Thanks!

PS: I'm new in the forum!

gothspeed

Apr 12 2012, 02:03 PM

............ there are a number of things that will cause overheating.

Did you recently install the 1.7 exhaust manifolds?

Have you checked the cooling fan for blockage?

Is your 914 Fuel Injected or Carbureted?

den_914

Apr 12 2012, 03:11 PM

QUOTE(gothspeed @ Apr 12 2012, 03:03 PM)

............ there are a number of things that will cause overheating.

Did you recently install the 1.7 exhaust manifolds?

Have you checked the cooling fan for blockage?

Is your 914 Fuel Injected or Carbureted?

I am with carburator 34 ICT Weber, I have no blocked fan cooling and I have a 2.0l muffler Dansk. Thanks!

gothspeed

Apr 12 2012, 03:15 PM

QUOTE(Elliot Cannon @ Apr 12 2012, 09:16 AM)

I painted my trans. black to help keep it cool. Black dissipates heat. Isn't that why radiators are painted black? Many aircooled motorcycle engines are painted or otherwise made black. Why would powder coationg keep the heat in rather than transfer it out to the cooling air?

Did the overheating happen all of a sudden?

was it running fine before?

When was the last valve adjustment and tune-up (timing set, float level checked)?

is the idle steady?

Also check to make sure your vacuum advance is working and not stuck.

den_914

Apr 12 2012, 03:22 PM

QUOTE(gothspeed @ Apr 12 2012, 04:15 PM)

QUOTE(Elliot Cannon @ Apr 12 2012, 09:16 AM)

I painted my trans. black to help keep it cool. Black dissipates heat. Isn't that why radiators are painted black? Many aircooled motorcycle engines are painted or otherwise made black. Why would powder coationg keep the heat in rather than transfer it out to the cooling air?

Did the overheating happen all of a sudden?

was it running fine before?

When was the last valve adjustment and tune-up (timing set, float level checked)?

is the idle steady?

Also check to make sure your vacuum advance is working and not stuck.

On the idle the temperature drop at normal. It overheat when I up a hill and when I drove at 65-70 mp/h. I can't adjust the carburator because a have a distributor 009.

Sorry if I don't speak well I speak french normaly

gothspeed

Apr 13 2012, 12:20 PM

What gauge or indicator are you using to determine the temperature of the engine?

Rand

Apr 13 2012, 12:36 PM

I wouldn't suspect the exhaust first.
All cooling tin and seals in place?
Exit at impeller housing connected to heat exchangers or plugged?
Verify/adjust valves, dwell, timing?
How do the plugs look? (Light gray / lean, or dark?)

02loftsmoor

Apr 13 2012, 10:52 PM

painting some thing is like adding insulation, the heat has to get though the coating of paint, bare metal is the best. as far as painting radiators black, Cheap paint, and air cooled Motorcycles are usualy anodized back and your english is better than mine.

QUOTE(den_914 @ Apr 12 2012, 04:22 PM)

QUOTE(gothspeed @ Apr 12 2012, 04:15 PM)

QUOTE(Elliot Cannon @ Apr 12 2012, 09:16 AM)

I painted my trans. black to help keep it cool. Black dissipates heat. Isn't that why radiators are painted black? Many aircooled motorcycle engines are painted or otherwise made black. Why would powder coationg keep the heat in rather than transfer it out to the cooling air?

Did the overheating happen all of a sudden?

was it running fine before?

When was the last valve adjustment and tune-up (timing set, float level checked)?

is the idle steady?

Also check to make sure your vacuum advance is working and not stuck.

On the idle the temperature drop at normal. It overheat when I up a hill and when I drove at 65-70 mp/h. I can't adjust the carburator because a have a distributor 009.

Sorry if I don't speak well I speak french normaly