Sophomore Rider
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Post by dude on May 9, 2013 15:22:56 GMT -5
When adding a extra base gasket how much does your comp.drop? I am at 220psi on a new never started motor. Its a AirSal 50mm 4stk.
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Sophomore Rider
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Posts: 114
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Joined: Feb 24, 2013 10:04:01 GMT -5
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Post by dude on May 9, 2013 21:19:59 GMT -5
[replyingto=dude]dude[/replyingto]I'll answer my own question. I added another base gasket (2 cheapes didn't measure them) went from 220psi to 195psi.I think the crank and starter will be happy. LoL
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Post by millsc on May 9, 2013 21:24:09 GMT -5
It will drop more after break in 195 is good ,compression drop values differ depends on gasket thickness compression was 195 on my tapout dropped to around 185 after break in my t3 compression is 200 will drop to around 190 after break in
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Post by carasdad on May 9, 2013 21:28:06 GMT -5
[replyingto=dude]dude[/replyingto]Sounds about right...my 2T racing BBK had almost no squish band...head is literally flat except where the plug hole is. I was right at 230 as the kit came! Added a second head gasket and it dropped to 190. Still high and had detonation until I blended my own 'NASCAR' fuel with Xylene and pump gas. 'Ping' is gone and power is up.
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Post by larry001964 on May 9, 2013 21:53:10 GMT -5
Hello every one,
Don't know how much extra base gaskets drop the compression, but I'm in the process of rebuilding Fawkes top end, and this time I'm adding that second one.
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Post by carasdad on May 9, 2013 22:28:07 GMT -5
Hello every one, Don't know how much extra base gaskets drop the compression, but I'm in the process of rebuilding Fawkes top end, and this time I'm adding that second one. Larry!..Heya..ltns. Building Fawkes the same as he was..BBK...stroker etc?.. |
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Sophomore Rider
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Post by CopperDeer on May 9, 2013 22:31:02 GMT -5
Fawkes is back!!!!!
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Post by millsc on May 9, 2013 22:50:51 GMT -5
Larrys build is awesome inspired me
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Post by larry001964 on May 9, 2013 22:58:00 GMT -5
[replyingto=carasdad]carasdad[/replyingto]I Carasdad
No not exactly, I'm downgrading Fawkes a bit, keeping the stroker, just downsizing him 5 cc's... Had a lot of trouble starting him this winter, tried too light an oil, and my compression went from 205 to 120, and now he won't run at all.. Also my muffler studs came loose and i didn't know it so he burnt an exhaust valve too..
So I bought a NCY 50mm kit, and new 50mm head, instead of the 52mm.. I learned a lot from the first build, and I'm building pretty close to what Hank has... That second base gasket is very critical in easy starting.. Thanks every one nice to be back
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Post by carasdad on May 9, 2013 23:03:35 GMT -5
I Carasdad No not exactly, I'm downgrading Fawkes a bit, keeping the stroker, just downsizing him 5 cc's... Had a lot of trouble starting him this winter, tried to light an oil, and my compression went from 205 to 120, and now he won't run at all.. Also my muffler studs came loose and i didn't know it so he burnt an exhaust valve too.. So I bought a NCY 50mm kit, and new 50mm head, instead of the 52mm.. I learned alot from the first build, and I'm building pretty close to what Hank has... That second base gasket is very critical in easy starting.. Thanks every one nice to be back Larry..build fast!!! and don't slow down to look back..cause millsc is right on ye @ss in builds. This is gonna be like a spectator sport for all of us watching you both. Like those "Cage Match' Wrestling events they have on tv... ;D |
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Post by larry001964 on May 9, 2013 23:12:33 GMT -5
[replyingto=carasdad]carasdad[/replyingto]LOL well he will be running by about next Wednesday.. He hehehehehh
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Post by millsc on May 9, 2013 23:20:42 GMT -5
I have two monster scoots lol
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Post by larry001964 on May 10, 2013 4:04:44 GMT -5
[replyingto=millsc]millsc[/replyingto]Thanks Millsc, I just answered some questions about the stroker, that was my main goal. That's why I'm downgrading him a bit, tired of always having to build parts to work. Would like to buy off the shelf like everyone else.. Do you have any pics of your build posted ? I would love to see them  |
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Post by hank on May 10, 2013 4:31:43 GMT -5
I Carasdad No not exactly, I'm downgrading Fawkes a bit, keeping the stroker, just downsizing him 5 cc's... Had a lot of trouble starting him this winter, tried too light an oil, and my compression went from 205 to 120, and now he won't run at all.. Also my muffler studs came loose and i didn't know it so he burnt an exhaust valve too.. So I bought a NCY 50mm kit, and new 50mm head, instead of the 52mm.. I learned a lot from the first build, and I'm building pretty close to what Hank has... That second base gasket is very critical in easy starting.. Thanks every one nice to be back Hi larry its great to see you   ;Dhow ya been ? I used 2 gaskets on "Spectre" and compression is at 195 So sorry to hear that Fawkes is down but im sure that you will have him ship shape and bristol fashion in no time Take care and ride safely dear friend Yours Hank |
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Post by larry001964 on May 10, 2013 7:39:58 GMT -5
[replyingto=hank]hank[/replyingto]Hi Hank,
Nice to hear from you too. Ohh yes Fawkes will be running again soon. He took a lot of damage this year, even had to replace body panels, hate the color. Any way nice to be back..
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