Will a dhla 40 carb kit fit a dhla 48? I can't remember where i saw the listing for a kit at, and i thought it said dhla 40/48. Does anyone know if this is true?

Thanks, Rotor13B

 

A DHLA is a DCOE-factor carb. All DCOE-factor carbs have the same bolt pattern/mounting plates.

If the manifold was designed for a small one, you might need to port it out though.

 

What i mean is, will the gasket kit fit, i.e, pump jet, ac pump etc.

 

Most of it will fit. Some creative enlargement of the carb to manifold/filter gaskets will be needed, but it beats making them from scratch.

Pump jets never fit, the accel pump gasket wont work either if you're running an RB modified carb. Dont make the mistake of prying open your accel pump if it's working fine and isn't leaking. The top cover gasket will fit, so will the jets and idle mixture screws that use simple Orings. Simple fiber Orings for the remaining parts dont vary from one DHLA to another, so you wont have any problem with those.

Most rebuild kits come with a new needle/needle seat. If it's a #300 use it... if not, throw it out lol.

 

So, is this a RB Dellorto or not? My carb doesn't have the short hose that is going across diagnally, and my throttle linkage is different. i have a bracket that makes the throttle cable come up over the carb then down to the linkage. Other than that, it looks the same.

 

Oh yeah, this is the kit i was referring to.

 

That's a 13B RB modified Dellorto. Read what I posted above about the kit... it's exactly what I was talking about. BTW, that's 2 identical kits.

 

From what i can tell from the kit, it does not have the same gasket that mine has on the ac pump. Mine has a 1/8 to 1/4(don't know for sure, was just eyeballing it) gasket, but where the little hose is on the carb, (in engine pic) just has a plug in it. but it is on a 13B engine also. Ok, I might be talking outta my ***, but that little hose looks like it is a overflow hose from in the carb back to the fuel delivery inlet. The reason i say this is because under the cover there is a little triangle slot that if i remember right has a hole at the bottom and that would explain the plug on my carb. Is this just a different option depending on the yr. of the carb? Sorry for so many questions, but just want to get this figured out once and for all. Thanks, Rotor13B


Actually that kit doesn't have the gasket at all, just the ac pump. The gasket on mine is round, but larger than the ac pump itself, meaning that it sticks out all around the sides of the ac pump.

 

The black rubber spacer on your accel pump is an RB piece that isnt available anymore. That's part of the reason why I told you not to disasemble your accel pump if it isnt leaking. You'll most likely tear this spacer in the process. Plus, the accel pump diapragm you have in your kit wont fit properly either... so there's no real point in rebuilding the pump if it works fine. They rarely fail anyways.

I only see 2 hoses in your pic. The one on top of the carb loops back from one oil injection nipple to the other. You could just as easily cap each nipple. The other hose is that loooong one running off your manifold. I've never seen that before (but then, I've never used 5 and 6 port actuators on a Dell). Where does that hose end up? Is it going to your vacuum advance?? If it is... for the love of god, remove it and cap off the nipple on the manifold!

 

That's actually italianrotary's engine pic, i was just wondering why his looked different than mine. Do you think i could make that gasket since their not produced anymore? Mine is cracked around the edges and i'm afraid it going to leak, it pretty dry rotted.

 

will a delortto pass wa state emissions????? or a weber? or a holly? or a ....

 

how does WA do their testing? is it at idle or do they do the dyno-type simulation test?

i think the dellorto is capable of passing on the 6-port 13B's, but only on a Tuesday evening at 5:01 PM, if an elephant doesn't fart for the day ...

the other carbs, i don't know ...

and seriously, i suspect that it will take some "doing" to get the Dells to pass. personally, i've never actually taken an emissions test since i put on my Dells, so i have never actually "seen" them pass, but i'm sure WA is just as corrupt as any other place in this country, just find the "right" person ... and $70-$120 later, you'll have an inspection sticker ...

 

You'd never pass emissions with any hi performance carb unless you payed to pass .

Rotor13: you could make the spacer, but you're also going to have to make a new pump diaphragm if you damage it while removing the cover. Remember, the rebuilt kit one WONT WORK. Rotten edges on the spacer are typical and dont mean it will leak. Like I said, they rarely fail or leak. If it does begin to leak, an external bandaid is often used for fear of damaging rare internal parts.

 

I'm going to experiement with a few different pieces of rubber i've come across at the local hobby store. I did take out the gasket and managed to get the pump diaphram off without damaging it. The gasket had a crack all the way through it and i suspect that's where it was leaking from. At this point there is no going back so what the hell, i'm going for it...lol

 

Make sure you get something that has the same thickness once compressed... it's crucial to your accel pump stroke adjustment. Also, make sure the rubber you find is resistant to gasoline.

 

They will pass if you have a high flow cat connected to the headers and the air out of the air pump connected to the air inlet of the cat... It has been done in WA... you will need to also lean the mixture a little bit just for the test purpose...

Atkins had a supercharged 13b with a Holley carb in it and it passed WA emissions by doing what is mentioned above....

 

Well, I got it all back together and so far no leaks. I will be keeping a close eye on it just to make sure, but it looks like everything is gonna be ok. Just to make sure i used some model aircraft glue, (the type that you would use for a plane or helicopter in the fuel compartment)that was rubber friendly and was resistent to fuel.

 

I want to keep the stock oil metering pump, but don't know where to turn in order to run lines into maifold or Carb.

Some say the manifold is best, other say carb is best?

Neither my DCOE or intake are drilled for oil injcetion.

 

there are 2 screws near the idle mix adjust on the dell. those can be replaced with an oil fitting which allows the oil to be injected just past the carb, but before the manifold. i've heard of others tapping their manifold to accomplish the same thing.

 

btw, i ordered the oil nipples to replace those 2 screws from cb performance, i do believe.