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Old 08-10-2006, 04:08 PM   #976
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Quote:
Originally Posted by Rookie Solara
what is the typical plugs that ppl commonly use on MEGA ZX-21...? #6 or #7 cause I would like to stock some of those........
I only use the #200161 => turbo 6 cold
and the #200171 => turbo 7 cold

I always try to use the 7, but in case of higher temperatures, which need richer engine settings, which then might give flame-out problems, I will put in the 6.....
You can also use the 7 hot for that purpose.....
I think you should order both the 7 cold and hot types........
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Old 08-11-2006, 03:37 AM   #977
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Quote:
Originally Posted by M7H
I only use the #200161 => turbo 6 cold
and the #200171 => turbo 7 cold

I always try to use the 7, but in case of higher temperatures, which need richer engine settings, which then might give flame-out problems, I will put in the 6.....
You can also use the 7 hot for that purpose.....
I think you should order both the 7 cold and hot types........
Can you explain to me what the difference is between the different range of plugs? (Eg. 5, 6, & 7)


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Old 08-11-2006, 04:55 AM   #978
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hey guys i just got a mega zx .21 dsII off my mate thats had 1 idle tank and 5 tanks with load driving the car and slowly leaning.

can some one give me the stock needle settings pleasE?

plus any info regarding these engines thatw illcome in handy

thanks!
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Old 08-11-2006, 07:12 AM   #979
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Quote:
Originally Posted by Bundy_Bear
Can you explain to me what the difference is between the different range of plugs? (Eg. 5, 6, & 7)
BB
In general:
lower number = thinner wire = hotter plug.
Higher number = thicker wire = colder plug.

colder plugs are used in warmer wheather conditions.
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Old 08-11-2006, 09:53 PM   #980
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Default modifying .21 DSII?

has anyone tried any simple mods to this engine to increase power or make it run a little more effiecient ?

thanks
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Old 08-11-2006, 11:30 PM   #981
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Quote:
Originally Posted by M7H
In general:
lower number = thinner wire = hotter plug.
Higher number = thicker wire = colder plug.

colder plugs are used in warmer wheather conditions.
M7H:

Thanks for that... I have been told because i am using low nitro content i should be using a "hot plug"... so with your suggestion would a 7 hot be the go then? I will be running 16% nitro and it is downunder here is sunny (hot) Qld...

Look forward to your reply

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Old 08-12-2006, 08:15 PM   #982
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Quote:
Originally Posted by mrgsr
has anyone tried any simple mods to this engine to increase power or make it run a little more effiecient ?

thanks
I don't think anyone likes to give away secrets...
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Old 08-13-2006, 03:14 PM   #983
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Quote:
Originally Posted by Bundy_Bear
M7H:

Thanks for that... I have been told because i am using low nitro content i should be using a "hot plug"... so with your suggestion would a 7 hot be the go then? I will be running 16% nitro and it is downunder here is sunny (hot) Qld...

Look forward to your reply

BB
You just have to try.....
(Not the answer you were looking for probably...... )

But here in Holland, the EFRA rule is also 16%, and they are all running this engine with 6 or 7 plug as far as I know.....

Quote:
Originally Posted by mrgsr
has anyone tried any simple mods to this engine to increase power or make it run a little more effiecient ?
thanks
Making mods which saves fuel?......
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Old 08-13-2006, 10:16 PM   #984
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efficient meaning nicer power

Quote:
Originally Posted by M7H
You just have to try.....
(Not the answer you were looking for probably...... )

But here in Holland, the EFRA rule is also 16%, and they are all running this engine with 6 or 7 plug as far as I know.....



Making mods which saves fuel?......
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Old 08-14-2006, 03:20 AM   #985
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Quote:
Originally Posted by mrgsr
efficient meaning nicer power
It allready has nice power...
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Old 08-15-2006, 08:12 AM   #986
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Default Mega ZX21 DSII Race needle settings ?

hey guys i cant find the standard needle settings anywhere
can someone please give me these ? thank you very much

also has anyone found out the difference between the 2 engines that have the 7 or 8 fin head ?

thank you
John
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Old 08-15-2006, 07:03 PM   #987
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Default ZX12 Rod

I had my first rod failure this past weekend but it was not what I had expected. When I opened it up I found that the bushing on the crank end was gone. The rest of the rod looked fine. Is this what normally happens? I was expecting to find the crank end broken... looking more like a "J" than an "O". It was my fault. I forgot to change the rod when I was supposed to. It was my backup engine and I lost track of how much time I had on it.

I recently replaced the rod in my good engine and I noticed that it was different than the original one. It did not have a bushing in the top. Is this the new (better) rod?
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Old 08-17-2006, 07:59 AM   #988
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Default needle settings anyone please ??

Quote:
Originally Posted by mrgsr
hey guys i cant find the standard needle settings anywhere
can someone please give me these ? thank you very much

also has anyone found out the difference between the 2 engines that have the 7 or 8 fin head ?

thank you
John
i cant find these anywhere
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Old 08-17-2006, 08:11 AM   #989
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Quote:
Originally Posted by jag
I had my first rod failure this past weekend but it was not what I had expected. When I opened it up I found that the bushing on the crank end was gone. The rest of the rod looked fine. Is this what normally happens? I was expecting to find the crank end broken... looking more like a "J" than an "O". It was my fault. I forgot to change the rod when I was supposed to. It was my backup engine and I lost track of how much time I had on it.

I recently replaced the rod in my good engine and I noticed that it was different than the original one. It did not have a bushing in the top. Is this the new (better) rod?
The rod without the bushing at the top is the improved version, yes. It should last a lot longer than the original version.

Where did your bushing go? Did it get loose in the engine and possibly ruin the engine? I have photos of a MAX312 engine where one of the balls of the rear bearing failed and flushed into the combustion chamber:




Not a pretty sight, and it shows why you want to check your engine internals every now and then...
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Old 08-17-2006, 01:27 PM   #990
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Quote:
Originally Posted by mrgsr
i cant find these anywhere
Hi Mrgsr,


Main needle flush
Low speed needle 2 mm

This is a starter point on the rich side

Paolo
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