I have an original Nitro MT with a modified .15FE, all aluminum & titanium parts, pretty fast as is, but I'm looking to upgrade. I was looking at the OS CZ turbo .18 & an OFNA hyper .18. I need some suggestions on high performance engines. Should I just go with a .21 ?
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Engine Help !
- Thread starter HPIshark
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AC48
Hardcore RCTalk User
If you still want your truck to handle how it does, stick with a small block. A good friend of mine dropped a .25 in his MT2 and it was fast, but pretty uncontrollable, too much engine for that truck.
This is the engine I would think will be best for you, http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXHLV9&P=ML The HPI .18SS isn't bad either, but the OS is probably faster.
This is the engine I would think will be best for you, http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXHLV9&P=ML The HPI .18SS isn't bad either, but the OS is probably faster.
AC48
Hardcore RCTalk User
Yes, but you will need this header since it is rear exhaust and not side exhaust.
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXFAZ8&P=7
And if your running the FE now which just bolts right to the chassis you will need a set of engine mounts, like these:
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXCLR3&P=Z (there are some cheaper ones I believe)
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXFAZ8&P=7
And if your running the FE now which just bolts right to the chassis you will need a set of engine mounts, like these:
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXCLR3&P=Z (there are some cheaper ones I believe)
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These are the cheap ones: http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXN373&P=ML
But they allow the engine to move around a bit... I had a HPI NMT and I installed a OS 18 cv-r(x) without much hassle. It's a side exhaust just like the 15FE and 18SS.
You will want to get a better pipe than stock regardless what engine you run. And if you run a side exhaust, I'd get a better header as well. The exhaust system that is stock on that rig is poor quality as far as performance goes. It robbed a lot of power out of my OS18CV-R(x).
I also re-did the throttle a bit because I didn't like the stock horn:
But they allow the engine to move around a bit... I had a HPI NMT and I installed a OS 18 cv-r(x) without much hassle. It's a side exhaust just like the 15FE and 18SS.
You will want to get a better pipe than stock regardless what engine you run. And if you run a side exhaust, I'd get a better header as well. The exhaust system that is stock on that rig is poor quality as far as performance goes. It robbed a lot of power out of my OS18CV-R(x).
I also re-did the throttle a bit because I didn't like the stock horn:
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- Thread starter
- #7
Nice, I'm probably gonna go with the O.S. 18TZ-TX w/Rotary Carb, and the purple aluminum mounts cause all my other parts are matching. When the .15FE was modified, the exhaust was changed to an HPI tuned pipe. When I get the new OS, I will need a Rear Exhaust right ? which one do you recommend ?
thanks
thanks
It might depend on if your getting an engine with a pullstart or if you intend on using a bump starter.
The only rear exhaust SB's I've messed with were traxxas.
After a little digging, I found this one: http://www.horizonhobby.com/Products/Default.aspx?ProdID=HPI86163
Says it's for the RS4 NMT. There's a long and short one. But I have a feeling the short one is for the on-road series of the RS4.
Here's a link to the short one:
http://www.horizonhobby.com/Products/Default.aspx?ProdID=HPI86162
The only rear exhaust SB's I've messed with were traxxas.
After a little digging, I found this one: http://www.horizonhobby.com/Products/Default.aspx?ProdID=HPI86163
Says it's for the RS4 NMT. There's a long and short one. But I have a feeling the short one is for the on-road series of the RS4.
Here's a link to the short one:
http://www.horizonhobby.com/Products/Default.aspx?ProdID=HPI86162
