HSP billet cylinder head.
#1
Found a used HSP billet cylinder head with 12 to 1 dome in very good condition. Are these good bolt-ons? I see a few of you are running the HSP unit.
I went the Hot Seat's website and they clain there billet head increases low to mid range power/torque and hepls in the engines colling ability. Sounds good? How well does this unit work?
If I get this, I will be putting it on at the same time that I install my new Delta 2 V-Force reed valve and spacer.
'96 Scrambler 400 4X4
HPD Trail pipe/FMF Turbine Core II
HPD clutch kit
K&N filter
Boyesen Power Reeds
Wiseco piston
more to come....
I went the Hot Seat's website and they clain there billet head increases low to mid range power/torque and hepls in the engines colling ability. Sounds good? How well does this unit work?
If I get this, I will be putting it on at the same time that I install my new Delta 2 V-Force reed valve and spacer.
'96 Scrambler 400 4X4
HPD Trail pipe/FMF Turbine Core II
HPD clutch kit
K&N filter
Boyesen Power Reeds
Wiseco piston
more to come....
#4
#5
$50 or $250, sounds like a no-brainer to me, especially since you can buy a spare stock one for $100. If you're running enough compression to need the cylinder sandwich, you will probably have to go with the billet one. And you're right, they look great, but I couldn't justify the extra price. They also claim better cooling, but I haven't seen any tests to prove this. It makes sense in theory, since the coolant flows evenly out the head, but I don't know.
Waylan
Waylan
#6
#7
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#8
Mike,
Thanks for the imput. Glad you like yours. I think I will make the guy an offer. One question, what is the idea of running the colder spark plug...I have heard this being done before.
I went to your website and I see your quad is running parts from just about everyone. Looks cool.
Adam
Thanks for the imput. Glad you like yours. I think I will make the guy an offer. One question, what is the idea of running the colder spark plug...I have heard this being done before.
I went to your website and I see your quad is running parts from just about everyone. Looks cool.
Adam
#10
Adam,
For some reason or another the one size colder spark plug works better with the higher compression heads. I think it has something to do with keeping pre-ignition doen to a minimum by getting rid of heat. I started running one in my quad last summer and the fan never kicked on once as opposed to the BR8ES I used to use.
For some reason or another the one size colder spark plug works better with the higher compression heads. I think it has something to do with keeping pre-ignition doen to a minimum by getting rid of heat. I started running one in my quad last summer and the fan never kicked on once as opposed to the BR8ES I used to use.