Carb upgrades

[Bronx89lx]

For any one doing the weber conversion it is a must that u get a better fuel pump. A fuel pump that rocks 4psi's thats wats requiered and high volume for a steady fuel flow. The reason for this is that the stock fuel pump does not send a steady fuel flow at low rpms because it pluses the fuel. It cause the weber to boggle in the low rpms. A bigger filter is also good more air more fuel.
there is a cheap velocity stack set at A DGV remote filter adaptor and a poly utherane velocity stack from webercarbs.com or a ram flow filter.


By the way make sure u spray the linkages wit slicone spray or go to a bike shop and ask for teflon juice it doesnt brake up in wet weather.

[A20A1]

I remember running 4 psi with the stock carb... damn did I spin tires.
Only trouble it the fuel would lock up at 3,600 rpm.

I had the stock pump hooked to a dial in FPR... bad idea i guess.

So actually a better fuel pump will help people that can't or don't feel like getting a weber.

[shepherd79]

it is not the PSI that you need, you need fuel flow rate. 3.5psi with high flow rate will do just fine.

[Bronx89lx]

ur right shep its fuel flow rate keeps the float full

[k-roy]

Ok so the pressure should be around 4psi.
Whats the flow rate? In gallons per hour or whatever.

[x3r0]

what kind of modification/converstion needs to be done to put one of the carter fuel pumps on a 86 accord w/ a 32/36 weber carb?

[A20A1]

when did I say we needed psi?

[x3r0]

How much psi does the stock fuel pump give? Ihavn't been able to find info onthat. ??

[k-roy]

How much psi does the stock fuel pump give? Ihavn't been able to find info onthat. ??

it should be 3.5-4psi

[x3r0]

Then whats the problem with the stock fuel pump? 86+ Accords have electric fuel pumps, the problem with mechanical fuel pumps is pulsing flow, but this doesn't seem to be the case with 86+ accords.

[A20A1]

It should be but it only puts out about 3.2 - 3.5

[Bronx89lx]

the stock pump does not put out a steady fuel flow for the 32/36. Remember its a bigger carb it needs more fuel at a steady rate. as soon as u do the conversion i recommend u change the pump if u cant do it right away do it when u can u will feel the difference in performance i doesnt make sense to jet a carb that is not recieving the proper amount of air, fuel, spark. I feel its better to jet the carb after ur done doing ur mods. Get the weber first then work ur way to ur exhaust.

[dub88acc]

couldn't u just get a regulator? or is it necessary to replace the fuel pump

[A20A1]

A reg wont help... you can build up PSI by adding a reg but as soon as the demand increases the stock pump wont have a high enough flow rate to keep up.
Plus certain regs lock up after 3,600 rpm... I had a guy in an RX-7 carbed run into the same problem.

[Bronx89lx]

Speed is money dont be cheap or u wont be fast there is no way around it. u can get a nice carter fuel pump that does not need a reg and is high VOLUME if i remember 70-80 gph and built in reg for 4psi. U can use it wit single or triple carbed set ups. so u are not losing and it is only 95 bucks comes wit mounting bracket. its also a rotary style pump.

[Mike's89AccordLX]

Alright I'm finally realizing that my fuel is not the greatest and I think I over jetted my car b/c I didnt realize I just wasn't getting enough fuel flow.

I remember Holley had one and so did weber but that was spendy. The carbed accords have an inline pump and not an in tank pump right? I will have to check my service manual later.

Thanks,
Mike