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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: 3KR - How hard would it be to achieve?
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Thu, 26 June 2003 05:42
 
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3K-R is for racing, but i think it was originally called a 152E or something along those lines. toysport have it on the history page iirc, google for "twin cam 3K"
the main difficulty i see when transferring heads are:
1-bore spacing.
2-head bolt position.
the bore spacing also affects valve position relative to the cylinder walls, so it's kinda important.
retapping the block in a K motor would be difficult, as they have sort of lumps for the bolts to go into, rather than a fully solid area of block  , so you'd have to modify head bolt position.
and all the things gianttomato said  chains or belts and water/oil can all be worked out. hmmmm roller rockers?
i have been thinking more and more about this of late (to avoid doing uni work:P ) and i'm thinking you'd have to start with either a new casting, or make a billet or plate/weld type of head.
for this you'd need some pretty accurate machining tools to get the angles right, and also for setting up cams etc...
good thing is that it would give you the opportunity to choose whatever 4 or 5 valve size/design you wanted, and optimise the port size/angles. downside is the obvious ridiculous cost of such a venture and that you are still limited by the piddly capacity of a K engine, so you have a limited torque in the end anyway
the K motors are really limited to about 8000rpm with stock valve gear... with DOHC, maybe that could go up to 10-11krpm? would it be worth it? would the bottom end hold up to the extra speed? (ie piston speed)
hmmmm, if anyone has access to nice machinery, i'd be very interested to start on something like this next year... would be fun
Cya, Stewart
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| | Subject | Poster | Date |
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3KR - How hard would it be to achieve?
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Grega | Wed, 25 June 2003 22:40 |
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Re: 3KR - How hard would it be to achieve?
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Blaze | Wed, 25 June 2003 22:55 |
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Re: 3KR - How hard would it be to achieve?
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Grega | Wed, 25 June 2003 23:43 |
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Re: 3KR - How hard would it be to achieve?
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gianttomato | Thu, 26 June 2003 00:04 |
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Re: 3KR - How hard would it be to achieve?
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oldcorollas | Thu, 26 June 2003 05:42 |
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Re: 3KR - How hard would it be to achieve?
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oldcorollas | Thu, 26 June 2003 05:56 |
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Re: 3KR - How hard would it be to achieve?
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Grega | Thu, 26 June 2003 02:53 |
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Re: 3KR - How hard would it be to achieve?
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gianttomato | Thu, 26 June 2003 03:47 |
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Re: 3KR - How hard would it be to achieve?
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pro_ke | Thu, 26 June 2003 04:53 |
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Re: 3KR - How hard would it be to achieve?
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Purple_Beasty | Thu, 26 June 2003 06:31 |
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Re: 3KR - How hard would it be to achieve?
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oldcorollas | Thu, 26 June 2003 07:46 |
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Re: 3KR - How hard would it be to achieve?
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Grega | Thu, 26 June 2003 08:51 |
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Re: 3KR - How hard would it be to achieve?
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gianttomato | Thu, 26 June 2003 08:54 |
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Re: 3KR - How hard would it be to achieve?
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chrisss | Thu, 26 June 2003 09:21 |
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Re: 3KR - How hard would it be to achieve?
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oldcorollas | Thu, 26 June 2003 13:26 |
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Re: 3KR - How hard would it be to achieve?
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Bill Sherwood | Thu, 26 June 2003 09:16 |
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Re: 3KR - How hard would it be to achieve?
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gianttomato | Thu, 26 June 2003 09:22 |
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Re: 3KR - How hard would it be to achieve?
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Jonny2TG | Thu, 26 June 2003 09:38 |
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Re: 3KR - How hard would it be to achieve?
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Bill Sherwood | Thu, 26 June 2003 11:09 |
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Re: 3KR - How hard would it be to achieve?
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EMP-2TG | Thu, 26 June 2003 11:32 |
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Re: 3KR - How hard would it be to achieve?
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Grega | Thu, 26 June 2003 23:59 |
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Re: 3KR - How hard would it be to achieve?
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pro_ke | Fri, 27 June 2003 14:23 |
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Re: 3KR - How hard would it be to achieve?
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Grega | Sat, 28 June 2003 04:53 |
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Re: 3KR - How hard would it be to achieve?
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sideshow | Sat, 28 June 2003 11:58 |
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Re: 3KR - How hard would it be to achieve?
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purpleminiep | Sat, 28 June 2003 12:49 |
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Re: 3KR - How hard would it be to achieve?
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TE35 | Sat, 28 June 2003 14:28 |
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Re: 3KR - How hard would it be to achieve?
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Purple_Beasty | Sun, 29 June 2003 10:00 |
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Re: 3KR - How hard would it be to achieve?
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Bill Sherwood | Wed, 02 July 2003 08:24 |
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Re: 3KR - How hard would it be to achieve?
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Grega | Wed, 02 July 2003 09:33 |
