Converting HIF 44 to turbo
Turbo Mini Forums

Hi there, I have a standard hif44 carb 1 7/8 and I have ordered a rebuild kit for a metro turbo carb and I was wondering what modifications I have to do apart from changing the bits that come in the rebuild kit ? If any , one thing I seem to have noticed is that at the top of the dash pot there is a groove on the turbo carb to take the clamp so the top doesn't blow off ! Any help would be appreciated


**Removed the poll for you**

Edited by paul wiginton on 23rd Mar, 2013.

I vote search

It's been covered recently, I think by Brett

Thanks il have a look again I didn't seem to find what I was looking for when I searched before ! What's the vote thing all about ? I'm rubbish at this

You clicked poll instead of topic.

Thanks I found some info by changing my wording it looks like I need to get a groove machined in to the top of the body which I can sort out and the rest seems like plain sailing

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=2103

Yes i moved to the darkside

Instagram @jdm_brett

Thanks sprocket , I think I understand what I should be doing now , just to clarify the reason the t piece will be needed in my situation is that I won't have the hole that marries up to the plenum in the nat asp carb ? I also understand about plugging up the unused pipes

Hi Brett the grove I was referring to is so the clamp can be fitted to the cap on the top as the nat asp carb does not have one , unless this is not essential ? But I don't want to cause any issues at a later date

No one ever uses the clamp, so the groove is redundant. Don't worry about it

mine sees 22+psi boost every time its out ( thats the current actuator setting( as i crushed my last actuator launching at pod )) and i have wound it as far as 28psi although now my carb is quite modified and is fitted with position sensors allowing me to log the actual needle position and throttle position

i have never needed the clamp to stop me blowing the damper off the top of the carb

also it started life as an n/a and ran on the track for 6 months with zero mods other than the 'T' peice trick
now its internaly the same as Turbo carb ( just need to drill the passages)


edit, i actually cannibalised a cracked turbo carb when converting mine originally so i have that groove but still dont use it
i also have a different piston settup with sensor fitted that does not have the groove

Edited by Brett on 23rd Mar, 2013.

Yes i moved to the darkside

Instagram @jdm_brett

Great news about the clamp ! Are you referring to drilling out the passageway so the t piece is not needed ? And is this a better job or does it not make any difference :)

Yes i moved to the darkside

Instagram @jdm_brett

Has anyone got any pictures and dimensions of the groove which needs machining to take the o-ring? does the body and the dashpot need machining?

1972 998 TURBO SLEEPER

Edited by Brett on 3rd Apr, 2016.

Yes i moved to the darkside

Instagram @jdm_brett

Brett many thanks, I'm only planning on running 1 bar max so I might give it a go with some sealant. Cheers

1972 998 TURBO SLEEPER