请问各位高手，关于K20A的问题，

godlovegh

01年DC5 TR  8400转到红线，还能在往下拉吗？拉下去就会爆估计……是车报废吧？K20A不经常爆Vtec会对发动机不好吗？请问各位的K20A最高拉了多少？

e-dc2

到红线了就自动cut 油了。。拉不下去了
不拉也没关系的。。。谁说不拉会对引擎不好。。。

godlovegh

刚和一哥们儿聊天，他说的……不拉居然会对车不好，所以我就郁闷了。一般你多久拉一次？

祖传老军医

拉一拉好比撸管，清除积碳

godlovegh

祖传老军医 发表于 2012-6-2 23:03
拉一拉好比撸管，清除积碳

的确也是，拉拉也好

godlovegh

有谁的K20A拉上过1万？

taitcw

godlovegh 发表于 2012-6-2 23:16
有谁的K20A拉上过1万？

Stock internals valve springs will bounce at 9300rpm.

Mugen ECU set redline at 9200rpm.

Only idiots will rev a stock engine to 10000rpm (with aftermarket ECU, the redline can be set manually).
When valve springs bounce, valves could be smashed by piston, engine byebye~

jinxin56

这款发动机到哪个年份停产了？

取暖基本靠抖

k20a偶尔拉拉没什么不好， 这高转发动机平时换挡可能也比普通的转速高点。
如果你想干废它也有很多方法。。。。

godlovegh

取暖基本靠抖 发表于 2012-6-3 00:39
k20a偶尔拉拉没什么不好， 这高转发动机平时换挡可能也比普通的转速高点。
如果你想干废它也有很多方法。。 ...

哈哈，是的是的，我不是经常拉，偶尔爆下Vtec而已，对积碳清理有帮助。一辆DC5拉1万不可思议……

godlovegh

taitcw 发表于 2012-6-2 23:39
Stock internals valve springs will bounce at 9300rpm.

Mugen ECU set redline at 9200rpm.

Waaaa… I cannot believe 10000rpm. Thats so amazing!

godlovegh

taitcw 发表于 2012-6-2 23:39
Stock internals valve springs will bounce at 9300rpm.

Mugen ECU set redline at 9200rpm.

Waaaa… I cannot believe 10000rpm. Thats so amazing!

ilmaro

没啥神奇的吧？转子13000转。。。。。。

韵儿

taitcw 发表于 2012-6-2 23:39
Stock internals valve springs will bounce at 9300rpm.

Mugen ECU set redline at 9200rpm.

我的b18都拉到10000

taitcw

韵儿 发表于 2012-6-3 10:05
我的b18都拉到10000

Good on you and your B18C.

RPM shown by speedo tacho always read high.

K20A, the stock cam does not produce much torque after 8000rpm anyway.  In fact, on dyno, the torque fall so much, there is not much point to rev to 9000rpm.

Also, the oil pump runs @ 1.6x the engine RPM, that's revving the engine high has an effect on everything else.

taitcw

godlovegh 发表于 2012-6-3 02:18
Waaaa… I cannot believe 10000rpm. Thats so amazing!

If you think revving high RPM is cool, then you should get a motorbike, 16000rpm easy

178654837

我的小摩托1万7千转 easy..K20A  1万转算啥...
原厂的K20A过了8200转马力峰值就过了,在拉就没意义了

godlovegh

ilmaro 发表于 2012-6-3 02:24
没啥神奇的吧？转子13000转。。。。。。

不是转子，就是8400红线的

godlovegh

178654837 发表于 2012-6-3 12:13
我的小摩托1万7千转 easy..K20A  1万转算啥...
原厂的K20A过了8200转马力峰值就过了,在拉就没意义了

明白了……感谢

韵儿

taitcw 发表于 2012-6-3 11:11
Good on you and your B18C.

RPM shown by speedo tacho always read high.

i rev it over the redline to compensate for the drop of revs when changing gear, only once reved it to 10k because the rev limiter wasn't coming on. its not good to rev it that high on a stock engine, but shows that its possible :)

bigmoon

干嘛非要拉10000，有啥意义么？ 又不是头D里的86过了10000RPM才能爆发最大性能

taitcw

韵儿 发表于 2012-6-7 08:34
i rev it over the redline to compensate for the drop of revs when changing gear, only once reved i ...

Yes I used to own a 98Spec before, need max rev to compensate for rev drop at gear change. Good engine.

The idea is that the engine RPM is kept at high torque range after a gear change (up), so the car will keep pulling hard.

Did you know your top speed at the end of back straight in Puke?

韵儿

taitcw 发表于 2012-6-7 11:49
Yes I used to own a 98Spec before, need max rev to compensate for rev drop at gear change. Good en ...

not too sure, around 200-210 depending on how fast coming out at the castrol.

dancer

档档过万见红的摩托党呼啸而过。。。。

hare

轉數不是高就是快,要看setup,先別說會不會爆,原廠cam你拉那麼高power只會越跌越低,你要注意peak power在那一個轉數出現.

godlovegh

hare 发表于 2012-6-21 22:04
轉數不是高就是快,要看setup,先別說會不會爆,原廠cam你拉那麼高power只會越跌越低,你要注意peak power在那一 ...

这样的啊，明白了，谢谢高人