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N12 Engine Sounds like a Diesel
- TurboZ.Dude
- Posts: 1360
- Joined: Wed Nov 22, 2006 4:25 pm
- Location: Närpes, Finland
- Contact:
That's exactly the problem I have... I adjust the tappet clearances regularly but I can't get the noise down.sgs wrote:If the tops of the valves are dished out your pretty fucked (for accurate adjustment) when this happens its impossible to do with the feeler gauges!
My N12:
http://forum.n12turbo.com/viewtopic.php?t=4926,
http://www.zxoc.co.uk/forum/topic.asp?TOPIC_ID=6345
http://forums.mightycarmods.com/showthr ... Pulsar-N12
in all honesty dude these cars are shit but they have so much character, are fun and go fairly well when running right. we still play around with these things because they are a fun addictive little shitbox! - Ash
http://forum.n12turbo.com/viewtopic.php?t=4926,
http://www.zxoc.co.uk/forum/topic.asp?TOPIC_ID=6345
http://forums.mightycarmods.com/showthr ... Pulsar-N12
in all honesty dude these cars are shit but they have so much character, are fun and go fairly well when running right. we still play around with these things because they are a fun addictive little shitbox! - Ash
- tassuperkart
- Administrator
- Posts: 5578
- Joined: Wed Jul 05, 2006 8:39 pm
- Location: Southern Tasmania
- Contact:
Nope! No imagination at all! You have 2 clearances you can check you know!sgs wrote:If the tops of the valves are dished out your pretty fucked (for accurate adjustment) when this happens its impossible to do with the feeler gauges!
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.Give up?.
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Old hands to the rescue!!!
Here you go you young pups, some more (free) pearls from the old time mechanics experience vault!
You divide the tappet clearance by the rocker ratio and measure between the cam lobe and the follower. Its easier than measuring the tappets gaps themselves with bent feeler guages, accurate, repeatable and allows for rooted tappet faces due to overrev abuse!
There you go ladies..............Damn Im good!!!
L8r
E
Forcd4 wrote:Oh fuk no dude it's you a again, the oracle.
- TurboZ.Dude
- Posts: 1360
- Joined: Wed Nov 22, 2006 4:25 pm
- Location: Närpes, Finland
- Contact:
Hey, thanks E! It's good having you around...
Yeah, it would be good to know the ratio... is it easily measurable or do you have some factory value for it?
Yeah, it would be good to know the ratio... is it easily measurable or do you have some factory value for it?
My N12:
http://forum.n12turbo.com/viewtopic.php?t=4926,
http://www.zxoc.co.uk/forum/topic.asp?TOPIC_ID=6345
http://forums.mightycarmods.com/showthr ... Pulsar-N12
in all honesty dude these cars are shit but they have so much character, are fun and go fairly well when running right. we still play around with these things because they are a fun addictive little shitbox! - Ash
http://forum.n12turbo.com/viewtopic.php?t=4926,
http://www.zxoc.co.uk/forum/topic.asp?TOPIC_ID=6345
http://forums.mightycarmods.com/showthr ... Pulsar-N12
in all honesty dude these cars are shit but they have so much character, are fun and go fairly well when running right. we still play around with these things because they are a fun addictive little shitbox! - Ash
- TurboZ.Dude
- Posts: 1360
- Joined: Wed Nov 22, 2006 4:25 pm
- Location: Närpes, Finland
- Contact:
Besides, doing measurements by hand would give highly inaccurate values anyway, now that I think of it. *sigh* Not my day today...
My N12:
http://forum.n12turbo.com/viewtopic.php?t=4926,
http://www.zxoc.co.uk/forum/topic.asp?TOPIC_ID=6345
http://forums.mightycarmods.com/showthr ... Pulsar-N12
in all honesty dude these cars are shit but they have so much character, are fun and go fairly well when running right. we still play around with these things because they are a fun addictive little shitbox! - Ash
http://forum.n12turbo.com/viewtopic.php?t=4926,
http://www.zxoc.co.uk/forum/topic.asp?TOPIC_ID=6345
http://forums.mightycarmods.com/showthr ... Pulsar-N12
in all honesty dude these cars are shit but they have so much character, are fun and go fairly well when running right. we still play around with these things because they are a fun addictive little shitbox! - Ash
- tassuperkart
- Administrator
- Posts: 5578
- Joined: Wed Jul 05, 2006 8:39 pm
- Location: Southern Tasmania
- Contact:
- tassuperkart
- Administrator
- Posts: 5578
- Joined: Wed Jul 05, 2006 8:39 pm
- Location: Southern Tasmania
- Contact:
These motors run just fine on low octane, maybe check your ignition timing?paul w wrote:Having been on the end of tassuprkarts' whip from saying exactly the same thing, I have to say that once correctly adjusted, the engine sounds fine.
Nothing like a diesel, although it did somewhat on low revs/higher load until I swapped to higher-octane fuel (to remove the pinging).
I'm always concerned about adjust the timing to other than that supplied by the factory. It's there for a reason - to get the best of both worlds.
Any change has its pros and cons, so if I make to the timing, what is it, and what's the downside?
I presume by lower octane, you mean E10?
I tried out Premium Unleaded on a recent trip to the Snowy Mtns, and it seems to run smoother, with a bit more power.
Who knows if this is just perception, but it certainly seemed to have a bit more go. And, at $4 more per tank, it's not that much of an issue.
Any change has its pros and cons, so if I make to the timing, what is it, and what's the downside?
I presume by lower octane, you mean E10?
I tried out Premium Unleaded on a recent trip to the Snowy Mtns, and it seems to run smoother, with a bit more power.
Who knows if this is just perception, but it certainly seemed to have a bit more go. And, at $4 more per tank, it's not that much of an issue.