Blox H series 68mm TB

Post by **Lude-dude** » Wed Feb 19, 2014 10:50 am

I thought maybe they got gunked up a little, and started sticking

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Wed Feb 19, 2014 11:33 am

Not directly relevant, but the standard butterfly valve on Lisa's lude sticks closed.
That's not due to gunk though - I've given it all a good clean up and no difference.
Adjusting the throttle cable would only cure it on her car by preventing the butterfly closing fully, which isn't ideal.
I'm going to swap it with a used replacement I have.

Post by **Drax** » Wed Feb 19, 2014 12:29 pm

right, 66m Alpha series it is... im not bothered about a 2mm difference

thanks for everyone's input

Post by **NafemanNathan** » Wed Feb 19, 2014 12:37 pm

Drax wrote:right, 66m Alpha series it is... im not bothered about a 2mm difference

You sure? You're going for quite an engine build. Seems daft to restrict it right at the start of its cycle.

What inlet manifold are you going for?

Post by **Drax** » Wed Feb 19, 2014 12:42 pm

NafemanNathan wrote:
Drax wrote:right, 66m Alpha series it is... im not bothered about a 2mm difference
You sure? You're going for quite an engine build. Seems daft to restrict it right at the start of its cycle.

What inlet manifold are you going for?

ATR inlet (which will be port matched to whatever I buy). I don't want to go 70mm due to all the "problems after 68mm" talk there's always been - you think 68mm is worth it over 66mm?

Post by **Merlin** » Wed Feb 19, 2014 12:53 pm

Drax wrote:you think 68mm is worth it over 66mm?

The higher the rpm your engine will rev to the more air it will require. So it will depend on the rest of your setup.

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Wed Feb 19, 2014 1:18 pm

I'd say 68mm too. What about a copy of the Blox (essentially what the Alpha series is):

http://www.ebay.co.uk/itm/Omni-Power-68 ... 5d3d06654a

http://www.ebay.co.uk/itm/68-MM-Throttl ... 2a2ea0b871

Me and Nathan have different brand copies and work nicely. Throttle bodies aren't exactly rocket science mechanical items.

Post by **NafemanNathan** » Wed Feb 19, 2014 1:28 pm

Merlin wrote:The higher the rpm your engine will rev to the more air it will require. So it will depend on the rest of your setup.

^^^^ This, and I say your build will justify bigger than a 66mm.

Post by **Merlin** » Wed Feb 19, 2014 1:30 pm

What is the pipe that is sticking out of the side of the Omni Power TB's?

Supercharged 無限MUGEN BB1 Profile · Post by **nucleustylzlude** » Wed Feb 19, 2014 1:30 pm

Merlin wrote:What is the pipe that is sticking out of the side of those?

Its an excited little TB.