Oil cooling questions

[Blower1]

What is the oil cooled 1100cc engine´s cooling oil pump flow cc/engine revolution?

Is there any reason not to put oil cooler on top end cooling line?

I have GSX engine with R cylinder block and dot head. Engine have a extra oil pump for cooling. Both pumps are on the same drive shaft and have a similar internals. Each pumps capacity approximately 4,5cc/engine revolution. Oil cooler is from Bandit 1200 and oil is flowing through thermostat to the cooler.

Why I asking these questions is when I look in to the dot head intake ports, they are slightly yellow like gasoline has bunrt in to the port walls. That phenomen I haven´t seen on air cooled engines. Now I have started thinking to add small (90 x 200mm) oil cooler on to the head cooling line behind the front fairing.

[dupersunc]

Look at the oil cooled race bikes from back in the day, the had huge coolers, often multiples on the cylinder head cooling circuit.  They prioritised the cooling of the cylinder head circuit over the main pressure side.

My slabbie race bike with a stock 1127cc motor, would get significantly slower on the straights over the course of a 7-8 lap race, the data logger showed this clearly.  Fitted a cooler to the head circuit in the front of the fairing, and the problem went away.

[wraith]

Miss W has had a head cooler as well as the 330mm 19 row cooler on her standard gsxr1127 (apart from the Cobra exhaust and K&N dual filters) for years with no problems 

[clivegto]

I run a head cooler on my turbo Harris where the normal cooler would be and it doesn't get hot not even in summer. 

[Gixer1460]

Not unusual to see head coolers added if the OEM head cooling lines changed to Goodridge Braided type - everything from small 'token' sized to larger than main have been fitted but few people know what effect they have - just knowledge that additional cooling will be of a benefit plus the extra oil capacity (relatively speaking) is always a bonus. BUT coolers MUST be in airflow so fitting them inside or behind fairings will render them pointless, also your thermostat may be operating at too high a temp . . . .  OEM GSXR's were never fitted with thermostats, says Suzuki thought them irrelevant?

[Blower1]

31 minutes ago, Gixer1460 said:

Not unusual to see head coolers added if the OEM head cooling lines changed to Goodridge Braided type - everything from small 'token' sized to larger than main have been fitted but few people know what effect they have - just knowledge that additional cooling will be of a benefit plus the extra oil capacity (relatively speaking) is always a bonus. BUT coolers MUST be in airflow so fitting them inside or behind fairings will render them pointless, also your thermostat may be operating at too high a temp . . . .  OEM GSXR's were never fitted with thermostats, says Suzuki thought them irrelevant?

Cooler will be inside the front fairing. I will make enough holes to the fairing and seal the cooler against the fairing. Fairing itself creats slight underpressure so it might not be so bad place for cooler anyway.

Thermostat starts opening about +75C and is fully open at +85C.

[dupersunc]

1 hour ago, Gixer1460 said:

Not unusual to see head coolers added if the OEM head cooling lines changed to Goodridge Braided type - everything from small 'token' sized to larger than main have been fitted but few people know what effect they have - just knowledge that additional cooling will be of a benefit plus the extra oil capacity (relatively speaking) is always a bonus. BUT coolers MUST be in airflow so fitting them inside or behind fairings will render them pointless, also your thermostat may be operating at too high a temp . . . .  OEM GSXR's were never fitted with thermostats, says Suzuki thought them irrelevant?

As I said. I have data that proves they are effective.

[Gixer1460]

58 minutes ago, dupersunc said:

As I said. I have data that proves they are effective.

You aren't the majority, you (maybe) are the exception!

[george 1100]

I have a head cooler on one of my road going bikes and one on the track bike. On the road going bike it's not as effective due to the stop start nature of traffic but on the track bike it makes a huge difference. Oil temp dropped noticeably and overall performance improved. I can't remember the temperature difference as I haven't been to the track for a while but it was significant. I'm running a 13 row on the head