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Old 03-28-2008, 07:09 PM   #1
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Smile AFTERMARKET MAGNESIUM HEADS?

Yo ppl I have a orignal O.s. 12. Tz and I know about all the Speed but I was wondering if you could just buy the head and mount it on the orignal tz???
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Old 03-29-2008, 01:43 AM   #2
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Stay away from these heads. When running in hot conditions the engine will become to hot and you get tunning problems, also the advantage of the low CG is for an avarage driver also not noticeable.
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Old 03-29-2008, 11:18 AM   #3
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No offense buts thats bull....I have a 21. O.s. speed and the magnesium head works like a charm...But maybe the 12 dosen't???Idk but the 21. works well
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Old 03-29-2008, 06:57 PM   #4
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Originally Posted by Team hawk View Post
No offense buts thats bull....I have a 21. O.s. speed and the magnesium head works like a charm...But maybe the 12 dosen't???Idk but the 21. works well
I had a MRT Ninja with a magnesium head. Magnesium just created alot of trouble. I quickly switched back to alloy heads.

Why are you so set on magnesium anyway? when alloy is better!
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Old 03-29-2008, 07:44 PM   #5
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:lol
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I had a MRT Ninja with a magnesium head. Magnesium just created alot of trouble. I quickly switched back to alloy heads.

Why are you so set on magnesium anyway? when alloy is better!


Cant you see his location? it says Toilet , that means he likes sh*t .. Dont get offended mate , its just a pure joke.. Peace. Honestly Magnesium dont work for me either.
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Old 03-30-2008, 04:17 AM   #6
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Default MAGNESIUM HEADS

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:lol



Cant you see his location? it says Toilet , that means he likes sh*t .. Dont get offended mate , its just a pure joke.. Peace. Honestly Magnesium dont work for me either.
i have the os speed spec 2 and the magnesium head works really nice...never had problem with tuning or temps...actually the temp has never gone more than 75c...they are very light ....actually it's about 30-40grams lighter than other engines...i have not regret it , believe me
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Old 03-30-2008, 05:32 AM   #7
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Just remember guys...a colder engine does not make it a better/faster one.
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Old 03-30-2008, 09:57 AM   #8
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Ninja mr.21r t and a O.S. Speed 21VZ-B V-Spec. Yes maintaining a tune "on the Edge" is very frustrating. With a quality temp gun shoot the glow plug area and then shoot the back of the block above the exhaust out let but below the heat sink. The temperature difference is staggering when compared to the same engine with an aluminum heat sink. This means that Magnesium is a poor conductor of heat when compared to aluminum. Same engine, same car, same track, same driver, same day, same scoring system. Ran them back to back only swapping the heat sink. Same lap times. However the Aluminum heat sink let me pull out a head shim and lean it. Those lap times are faster. Nice gimmick. Somebody wanted to show the world there new inovation. Speaking of inovations and gimmicks, I would like to thank Serpent for sharing the V-Tech with the world. Get it?
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Old 04-07-2008, 11:50 PM   #9
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Quote:
Originally Posted by Team hawk View Post
Yo ppl I have a orignal O.s. 12. Tz and I know about all the Speed but I was wondering if you could just buy the head and mount it on the orignal tz???
in short, yes you cld buy the magnesium head and put it on your 12TZ.
from what i know, the magnesium heatsinks found on the OSspeed .12 and .21 engine are made by an aftermarket company office ZPI in japan..
http://rc-zpi.com/gp12_e.html

frankly, you're better off using an aftermarket alu heatsink such as the Kawahara one, better cooling effect than the orig OS head.

in the end , this thread became a "alu vs mag" heatsink debate.
(yet no one answered your main question..)
personally, i wouldn't use magnesium head on any of my cars, esp not my 1/8 buggy.
seen too many magnesium heads breaking off.
guess you know that magnesium becomes very brittle when it gets too hot.

the magnesium fins in the jdm evo9 turbo is a gd example..
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Old 05-06-2008, 11:34 AM   #10
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I have an extra blue head from the stock TZ sitting around. Can this be used instead of the magnesium head on the Spec II?
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Old 05-07-2008, 12:19 AM   #11
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I have an extra blue head from the stock TZ sitting around. Can this be used instead of the magnesium head on the Spec II?
Yes it can
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Old 03-25-2009, 07:30 PM   #12
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i used my engine os spec II .12tz (magnesium head) for the first time last week, and did a 5 minute run around a fairly wide track....I did about 2 laps and temp read at 85degrees CELCIUS....after 4 more laps, it went to 135degrees CELCIUS, engine was running at factory settings (2 and half turn out) with a 1/8th on lean side and it was quite a hot day...probably around 30 degrees....when should i be concerned with what temps the engine gets too?


thanks...
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