Rybeans street/track Ek4


Oh one more, how you run new engines in?
I'm sure rybean won't mind the questions as they are relative to him aswell.
 
No ask away. All relevant information I'd be interested to hear the answer to.

Thanks for the kind comments as well guys. People love the Sheep haha
 
jesse888 said:
Oh one more, how you run new engines in?
I'm sure rybean won't mind the questions as they are relative to him aswell.
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On the dyno I follow this process, 10 mins of lite load(20-30% throttle), accelerating and de-accelerating the engine, for the next 10 mins I will apply more load(50-60% throttle) and start doing sweeps/dyno pulls up to ~5000rpm. The last stage of run in which again lasts roughly 10mins will consist of dyno pulls at full load(100% throttle) up to ~6500rpm. After this period I will change the oil and filter, you can now use the oil of your choice which the engine will run on long term. Then it's back on the dyno to complete mapping at full load/max rpm.

The above process I have applied to engines mainly built for competition use but the same process can be applied to a engine built for road going use.
 
Thanks for the great info. What bearings do you use with manley h beams and what tolerance should I aim for?
 
^good question, oem tolerance I'd assume.
Piston ring gap is one I'm struggling to find.
 
When u buy yr new piston it will tell u what gap to set them at track , turbo , nitrous , that's wiseco anyway .
 
Bigskank said:
When u buy yr new piston it will tell u what gap to set them at track , turbo , nitrous , that's wiseco anyway .
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Is that the case? Cool!
Turbo track car an option? Lol
 
Rybean said:
Thanks for the great info. What bearings do you use with manley h beams and what tolerance should I aim for?
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Honda OEM bearings. What power are you aiming for and what is the max rpm you envisage the engine will rev to?
 
Yeah I was thinking slightly more clearance.
Not sure if my logic is correct but would think that having more power or being used hard all the time would require alittle more clearance. Could be completely wrong...
 
Rybean said:
400hp and no higher than 8.2krpm
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For your mains I would aim for .0015" and your big ends .0018" clearance.

If using Wiseco pistons i'd recommend going with .004" P2W clearance, the spec sheet will probably specify .0025" for 81.5mm pistons but IMO that is too tight.
 
Vtec6000 said:
For your mains I would aim for .0015" and your big ends .0018" clearance.

If using Wiseco pistons i'd recommend going with .004" P2W clearance, the spec sheet will probably specify .0025" for 81.5mm pistons but IMO that is too tight.
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I'm using 81mm pistons, still go for. 004 p2w?

Im
 
Rybean said:
I'm using 81mm pistons, still go for. 004 p2w?

Im
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Yes will be fine at .004 P2W clearance. Even with a cold engine I've not seen any excessive piston slap at .0045" using Wiseco pistons.
 
Vtec6000 said:
Yes will be fine at .004 P2W clearance. Even with a cold engine I've not seen any excessive piston slap at .0045" using Wiseco pistons.
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Thanks for information. Ordering my setup tomorrow. :)
 
Mine should be here today! Hope someone is in to collect them!
 
jesse888 said:
Mine should be here today! Hope someone is in to collect them!
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quick arnt they. I ordered mine last night at around 7pm. They're already in the country! How much tax did you end up paying if you don't mind me asking. PM if you like,.
 
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