Fuel used for 12:1 Raptor owners?
#1
#3
Fuel used for 12:1 Raptor owners?
DO NOT run pump gas in your raptor if it is 12:1 compression. Head design is the reason some quads like the YFZ and Z 400 can run pump gas. If you try to run pump gas in your 12:1 raptor it will prematurely detinate and you will most likely melt down your piston. I have a friend who's raptor is 11:1 and he runs 50/50 mix of VP's ultimate 4 and C112.
#4
Fuel used for 12:1 Raptor owners?
I had 11:1 before the rod blew. I ran 91 and experienced no detonation problems at all. When I tore the motor down to replace the rod, there was no sign of detonation. I tried race gas when it was 11:1 with no change in performance, so I didn't waste my money.
So, I have a couple questions:
1. Can you actually hear the pinging in a Raptor like you can in a car?
2. Can you see signs of detonation on the spark plug?
3. Will it be easy to tell if I need to raise the octane or will I just melt a piston or something? I would like to experiment with race gas/91 mix ratio to maximize the use of the high dollar race gas. Are there any suggestions?
An easy response is....Dude, you better just use race gas to be safe... I know that already.
Thanks!
So, I have a couple questions:
1. Can you actually hear the pinging in a Raptor like you can in a car?
2. Can you see signs of detonation on the spark plug?
3. Will it be easy to tell if I need to raise the octane or will I just melt a piston or something? I would like to experiment with race gas/91 mix ratio to maximize the use of the high dollar race gas. Are there any suggestions?
An easy response is....Dude, you better just use race gas to be safe... I know that already.
Thanks!
#5
Fuel used for 12:1 Raptor owners?
Originally posted by: FASTFATBOY
DO NOT run pump gas in your raptor if it is 12:1 compression. Head design is the reason some quads like the YFZ and Z 400 can run pump gas. If you try to run pump gas in your 12:1 raptor it will prematurely detinate and you will most likely melt down your piston...
DO NOT run pump gas in your raptor if it is 12:1 compression. Head design is the reason some quads like the YFZ and Z 400 can run pump gas. If you try to run pump gas in your 12:1 raptor it will prematurely detinate and you will most likely melt down your piston...
#7
Fuel used for 12:1 Raptor owners?
Try 93 octane and look for small black or silver flecks on the plug porcelain.
With a 12.5:1 piston, I have exactly 200 psi cranking compression. That is right on the edge of 93 octane, anything higher needs race gas. I run VP Red just to be safe, it's not too expensive and it's very clean burning.
With a 12.5:1 piston, I have exactly 200 psi cranking compression. That is right on the edge of 93 octane, anything higher needs race gas. I run VP Red just to be safe, it's not too expensive and it's very clean burning.
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#10
Fuel used for 12:1 Raptor owners?
Originally posted by: MasterRaptor
That's good info.Its got the Hot Cam stg 2. Maybe I should check cranking pressure to see where I am at.What are you paying for VP red?
That's good info.Its got the Hot Cam stg 2. Maybe I should check cranking pressure to see where I am at.What are you paying for VP red?
I pay about $5/gallon for VP Red.
I'll bet that you can run 93 octane but you'd better check with your builder to make sure.