Obr 30.5 full mod vs 36cc

[Crazybajabuild]

Hey guys I’m building a Baja 5b and I have 2 engines to choose from. A fresh rovan 36cc and a used obr 30.5cc full mod long rod. I know the obr is a more expensive racing engine compared to the Rovan 36cc but im curious as to which one will be better due to size difference and quality difference . I will be mounting a rcmax side pipe also. Which one do you think would have more power?

 

[RcJunkie13]

OBR no doubt... everyone will say the same thing. don't even look in the rovans direction. Thats basically all there is to the discussion dude.

 

[Seandonato73]

30.5.....

 

[Z.hb71]

The 30.5 will stomp the junky 36. Power, torque. Rpms, reliability, ect. Go with that.

 

[gavsta72]

That's not an OBR engine. Look at the engraving
Besides the fact that's not how Shaun or Dan engrave, it doesn't have any initials, or a date stamp.
It looks like it's been done by a drunken school kid tbh

 

[Z.hb71]

That's not an OBR engine. Look at the engraving
Besides the fact that's not how Shaun or Dan engrave, it doesn't have any initials, or a date stamp.
It looks like it's been done by a drunken school kid tbh

It could be an early 30.5. I'd try to agree with the seller to send it to obr at the buyers expense to have them verify its one of theirs. Personally I'd just save a little more and buy their 30.5 Longblock and complete it myself

 

[gavsta72]

It could be an early 30.5. I'd try to agree with the seller to send it to obr at the buyers expense to have them verify its one of theirs. Personally I'd just save a little more and buy their 30.5 Longblock and complete it myself

I was thinking you'd chime in. You've got a 30.5 in your Baja hey

Ive never seen engraving like that. The first OBR i ever bought was in 2017. Small neat engraving, with initials and build date
You can just send them a pic, they'll soon tell you

 

[Z.hb71]

Used to. 34 Reed now

Mine was with the tr Reed case tho so I don't know weather those are his engravings either. I'd try to get a few pics of the port work on the inside to send to obr and make sure.

 

[gavsta72]

Used to. 34 Reed now

Mine was with the tr Reed case tho so I don't know weather those are his engravings either. I'd try to get a few pics of the port work on the inside to send to obr and make sure.

Ive just been digging around the interweb. Seems it could be genuine, plus the initials weren't engraved on earlier engines either

 

[KevTrem]

Even if its a stock G290 with a long rod its still gonna out do the Rovan engine all day long.

Having experience with cheaper engines and now Zenoah engines, go zenoah fella.

 

[blackrain]

Go obr 30.5 looks like probably original bought mine in 2015 here some pictures

 

[Bandit2013]

I would not buy the Rovan 36cc engine. Been down that path twice, once for being clueless and second because it was the stock engine. It will run but will lack any power or performance one would think a larger displacement would provide.

 

[Crazybajabuild]

This engine is approximately 10 years old I got it cheap from a buddy that says it’s a beast. I didn’t pay full price and the 36cc came with the new Rovan Baja so I already had it. This is not a newer model 30.5 it is older model so I will see what I can get out of it. Thanks guys I will post more pics once engine arrives

 

[kreb]

Hey guys I’m building a Baja 5b and I have 2 engines to choose from. A fresh rovan 36cc and a used obr 30.5cc full mod long rod. I know the obr is a more expensive racing engine compared to the Rovan 36cc but im curious as to which one will be better due to size difference and quality difference . I will be mounting a rcmax side pipe also. Which one do you think would have more power?

Obr all the way. I have a couple of obr 30.5 and they both have about 5 years on them and they still kicks ass. I'll never give up my obr's for anything.

 

[Crazybajabuild]

That's not an OBR engine. Look at the engraving
Besides the fact that's not how Shaun or Dan engrave, it doesn't have any initials, or a date stamp.
It looks like it's been done by a drunken school kid tbh

So I actually got a hold of the previous owner and he happened to have the original receipt looks like it was purchased in 2012 and it sold for 389 lol that’s crazy aren’t they like 700 now?

 

[spents]

So I actually got a hold of the previous owner and he happened to have the original receipt looks like it was purchased in 2012 and it sold for 389 lol that’s crazy aren’t they like 700 now?

it says $469.99 on that receipt dude, so 2012, $469.99 plus tax is probably about right on the price

 

[Crazybajabuild]

it says $469.99 on that receipt dude, so 2012, $469.99 plus tax is probably about right on the price

That’s what I meant 469 my bad
So I’m getting ready to make a parts list and I’m going to go with a new top end kit to be safe and I’d like to put a new carb on it. What would be a good carb to go with? I’m assuming the carb on it has seen a lot of time so I’d like to get a new one

 

[Seandonato73]

1107

 

[Z.hb71]

668 or 1107. I ran 668 on mine and it was a ripper. I don't care for chokeless carbs personally

 

[Crazybajabuild]

I see they have modified carbs are they worth the extra$$