Cam Choices, Stock vs Stock |
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Cam Choices, Stock vs Stock |
DNHunt |
Oct 19 2004, 07:28 AM
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#21
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914 Wizard? No way. I got too much to learn. Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598 |
Jake
Geoff's the guy that figured out the firing order problem I had. He's bailed me out several times. Don't do too much for him though, I want to smoke his ass. Dave |
Jake Raby |
Oct 19 2004, 08:28 AM
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#22
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
If it has a stock cam, even though it has alot of power it is probably in a very narow band...
Adding a camshaft with a tad more compression will give better results... I tested the Squishy pistons and they failed my testing.... I really think that you had good weather at that dyno the day you went! Not to take away from your engine but most of the time we barely see 100HP from that combo at the flywheel! |
Bleyseng |
Oct 19 2004, 09:17 AM
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#23
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Aircooled Baby! Group: Members Posts: 13,036 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
I have dyno'd that engine 3 times over a couple of years. Consistant 90-92hp on a roller dyno with one day hitting 95hp after doing a tuneup, valve adjustment, no aircleaner etc.
Most 2.0l barely hit 80hp on that roller dyno btw. Just looking to have a flatter hp curve across a higher rpm range witha few more revs. I'll look for a dyno chart. What compression ratio you talking about? As I think I'll have to stick in new pistons as these might be toast. This might be the time for me to go to Megasquirt if I go to a hotter cam. Wait I don't want a hotter cam I want something that keeps things cool! but more hp. (IMG:style_emoticons/default/wacko.gif) Geoff |
Jake Raby |
Oct 19 2004, 09:23 AM
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#24
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
The cam I would think about for you has 800 more revs of power and a flatter curve..
It has split lift and split duration and the intake profile is from a Honda motorcycle and exhaust is from a Chrysler Hemi....... its a great cam. |
Bleyseng |
Oct 19 2004, 09:33 AM
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#25
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Aircooled Baby! Group: Members Posts: 13,036 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Ok, I'll order it from you. Do I need to call you ? I guess I'll have to go with the ceramic lifters too unless you have worked out the replacement steel ones.
Here is one of the dyno run charts. Attached image(s) |
Jake Raby |
Oct 19 2004, 09:52 AM
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#26
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Are you going to leave the engine alone otherwise??? Just add CR??
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Bleyseng |
Oct 19 2004, 10:04 AM
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#27
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Aircooled Baby! Group: Members Posts: 13,036 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
New 96mm P&C's, new cam and lifters, same ported heads but maybe better valve springs plus any other suggestions.
Gonna stay with either djet or go to Megasquirt FI as I hate carbs in Seattle. BTDT Geoff |
Jake Raby |
Oct 19 2004, 10:16 AM
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#28
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Cool, so you want to go with ceramic lifters??
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seanery |
Oct 19 2004, 10:17 AM
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#29
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waiting to rebuild whitey! Group: Retired Admin Posts: 15,854 Joined: 7-January 03 From: Indy Member No.: 100 Region Association: None |
Geoff,
get your butt over to the FFC, LN Engineering has donated a set of Ceramic Lifters! (IMG:style_emoticons/default/smilie_pokal.gif) |
Jake Raby |
Oct 19 2004, 10:30 AM
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#30
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
And they are SUPER hard to find right now! We are hurting for them to keep our schedule up..
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URY914 |
Oct 19 2004, 11:14 AM
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#31
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I built the lightest 914 in the history of mankind. Group: Members Posts: 123,652 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
I don't you to give out any trade secrets but who is making the lifters?
It must be a small specility shop right? LN can't be doing these in house. Paul |
Jake Raby |
Oct 19 2004, 11:22 AM
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#32
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Joe Schubeck makes them, actually he farms some of out to someone else that we cannot figure out..
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Bleyseng |
Oct 19 2004, 02:10 PM
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#33
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Aircooled Baby! Group: Members Posts: 13,036 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Yes, I want to go with ceramic lifters.
I can't fly back to the FFC, no time due to work. (hehe I do work sometimes) I am setting up a trip for New Years in Suriname thou. Guess I better get on the list., Jake. Geoff |
Katmanken |
Oct 19 2004, 06:12 PM
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#34
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You haven't seen me if anybody asks... Group: Members Posts: 4,738 Joined: 14-June 03 From: USA Member No.: 819 Region Association: Upper MidWest |
Coors is one of the big US ceramic companies. Mebbe they make the lifters.
They make ceramic filters for their beer and ceramic parts for other folks - which is how they got into the business. They injection mold the ceramic (like plastic) and then fire it. Had them make some parts for me once from a prototype plastic tool. Parts came back at 40% mold original size. (IMG:style_emoticons/default/blink.gif) Ceramics shrink like a bitch when fired. A lot more than metal injection molded parts (MIM) . Spent some time talking with a Japanese company and they talked about a grinding process to get phenominal (SP?) tight tolerances. Had a rod in a lifter sized cylinder that was ( if my memory serves) about a half a thou clearance. Got their literature somewhere. Ken |
Mueller |
Oct 19 2004, 06:31 PM
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#35
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
getting the lifters manufactured is not a big deal, it's meeting the minimum quantity
I'd bet money it's this company that is making them for Schubeck: Ceradyne Kyocera also makes silicon nitride lifters for industrial uses.......... |
Mueller |
Oct 19 2004, 06:36 PM
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#36
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
from a Ceradyne sales page:
Attached image(s) |
Mueller |
Oct 20 2004, 11:01 AM
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#37
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
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Jake Raby |
Oct 20 2004, 11:03 AM
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#38
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Already checked into that place.... Thats not who is doing them for Schubeck..
They require an order so big that we could never meet it. |
Mueller |
Oct 20 2004, 11:11 AM
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#39
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914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
want me to look into a few companies that we use for ceramics??
I don;t have a lifter here at work, but it wouldn't be hard to just draw up a preliminary drawing for an RFQ. |
Jake Raby |
Oct 20 2004, 11:14 AM
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#40
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Sure, keep looking!
Its definately somewhere in California- we know that! My new "Pro Extreme lifter" will be done in a few eeks for testing. It has a steel body and a rotating ceramic foot and allos valve events almost as fast as a full roller arrangement! |
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