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04-11-2019, 07:23 PM #1
21cc O-Ring Heads off 2001 2.5 Drag
Last edited by G-Train; 06-06-2019 at 06:55 PM.
"The Flying Clamato"
...This ain't no Party, This ain't no Disco, this ain't no foolin around..."Talking Heads - Life During Wartime"
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04-18-2019, 09:34 AM #2
What kind of compression did these heads yield on a drag block?
15.5 cobra 175 hp merc - sold
18 tahiti tiger O/B 200 hp merc - sold
19 STV euro - 2.5 merc DRAG
Seebold F1 tunnel - 2.0 F1/champ
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04-18-2019, 09:58 AM #3
I don't know exactly. Each compression tester will read slightly different.
I would say 200psi plus or minus...that's a guess.
Thanks
Greg"The Flying Clamato"
...This ain't no Party, This ain't no Disco, this ain't no foolin around..."Talking Heads - Life During Wartime"
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04-18-2019, 06:37 PM #4Screaming And Flying!
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04-18-2019, 07:15 PM #5
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04-18-2019, 08:24 PM #6
Again, this is a guess, but if you use the thin head gasket, I would think it would cut it down around 15psi.
You realize the O-Ring heads are cut for the block deck/head mating surface not using a conventional gasket, so there is a slight indent in the head that is the same diameter as the bore..."The Flying Clamato"
...This ain't no Party, This ain't no Disco, this ain't no foolin around..."Talking Heads - Life During Wartime"
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04-23-2019, 08:30 PM #7
TTT
I have been told these will not work on a 280. The Bolt Pattern is a little different.
Thanks for looking
Greg
616 283-8789 mobile"The Flying Clamato"
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04-26-2019, 11:47 PM #8
17cc's on one of my 2.4's is 295 psi's. So it would be at least 220 to 260 psi's
If I don't ask any questions, I'll never learn anything.
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04-28-2019, 06:42 AM #9Screaming And Flying!
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04-28-2019, 08:59 AM #105000 RPM
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Erik do you think those 21cc heads on a 300drag with straight race fuel would be to much for lake use would that be to hard on the engine? Or stick with 26cc heads a little more conservative. Whats your thoughts thanks Frank
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04-29-2019, 06:33 AM #11Screaming And Flying!
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Me personally, if I’m cruising the lake I’d be on pump gas but if you’re just hitting sandbars to drag race on the 21’s will be fine. Ring and piston life will suffer. Rings would probably start going away in 75-100 passes
Erik Kiser
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06-06-2019, 07:03 PM #12
New Price
$390 + Shipping
Thanks For Looking
Greg 616 283-8789 Mobile"The Flying Clamato"
...This ain't no Party, This ain't no Disco, this ain't no foolin around..."Talking Heads - Life During Wartime"
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06-10-2019, 09:43 PM #13
Sold, Thanks S&F
"The Flying Clamato"
...This ain't no Party, This ain't no Disco, this ain't no foolin around..."Talking Heads - Life During Wartime"
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