Jump to content


Photo

Matt's Megajolt guide


  • Please log in to reply
261 replies to this topic

#226 Kerrin

Kerrin

    One Carb Or Two?

  • TMF+ Member
  • PipPipPipPipPipPipPip
  • 1,056 posts
  • Location: Isle of Man
  • Local Club: Manx Mini Register

Posted 02 March 2009 - 10:28 PM

1380 engine fully rebuilt including gearbox, cam timed in.

Also Megajolt system fully installed from scratch including home modified bottom pulley.

Fired up first time on Sunday on the base map. SWEET. Did a full lap of the garage hopping like a kangaroo in celebration.

Just got to load up one of the maps I have acquired, and a bit of fine tuning.

Thank you for the help and inspiration, Matt in particular but there are plenty of others who helped.

#227 mike.

mike.

    Crazy About Mini's

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 6,176 posts

Posted 26 May 2009 - 11:00 PM

Anybody got pics of a vacuum install on your average stage 1 alloy inlet manifold?

Trying to think of the neatest way to do it.

Would this work alrite: Link

Posted Image

Its designed for fitting vacuum gauges so surely will give a good vacuum reading for running megajolt off?

#228 The Matt

The Matt

    You don't escape that easily.....

  • Admin
  • PipPipPipPipPipPipPipPipPipPipPip
  • 17,229 posts
  • Name: Matt
  • Location: Overton, North Wales
  • Local Club: Welsh Border Minis

Posted 27 May 2009 - 12:05 PM

Yep, that'd work fine. But surely your current distributor has a vacuum advance pipe from the carb? Can't you just use that?

#229 mike.

mike.

    Crazy About Mini's

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 6,176 posts

Posted 27 May 2009 - 12:20 PM

Oh yeah, didn't think about that! Problem solved :-

#230 liirge

liirge

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 4,097 posts
  • Local Club: EDMC AND MMC

Posted 16 June 2009 - 10:36 PM

didnt think you could use those take offs due to the throttle plate position giving a false reading on decelleration

#231 mike.

mike.

    Crazy About Mini's

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 6,176 posts

Posted 17 June 2009 - 08:08 AM

Anybody else used the dizzy take off succesfully?

#232 liirge

liirge

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 4,097 posts
  • Local Club: EDMC AND MMC

Posted 17 June 2009 - 02:31 PM

Im sure its the same reason you cant get a good reading off a vacuum Gauge using the Carb take off. However the Dizzy takes its advance curve off the carb take off, so this would be usefull to know!

#233 stardude

stardude

    Up Into Fourth

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPip
  • 2,457 posts
  • Local Club: hilltop mini's

Posted 17 June 2009 - 02:47 PM

why not get a mg metro alloy inlet? it has a vac takeoff for a vac guage or similar on the top, opposite the servo takeoff, well at least mine does :ermm:

#234 HARBER07

HARBER07

    Up Into Fourth

  • Traders
  • PipPipPipPipPipPipPipPipPip
  • 4,498 posts
  • Location: Suffolk
  • Local Club: Naaa......

Posted 17 June 2009 - 03:55 PM

liirge is right - I read it on one of their forums. Basically gives a false reading at idle and part throttle apparently.

#235 Ethel

Ethel

    ..is NOT a girl!

  • TMF Team
  • PipPipPipPipPipPipPipPipPipPipPip
  • 25,364 posts
  • Local Club: none

Posted 17 June 2009 - 04:04 PM

The vac advance pipe is situated so it gets masked by the throttle disc at idle, less advance will mean less risk of stalling. This isn't ideal for MJ, but not a huge issue as you can adjust the ignition map - it just means you might have to set the first rpm value a bit lower.

The problem with the MG Metty manifold tapping is that it's off centre so more prone to pulsing from the nearest two cylinders.

The alloy carb spacers with a built in pipe (Minispares) look like the best option

#236 Pooky

Pooky

    Crazy About Mini's

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPipPip
  • 5,691 posts
  • Location: Sunny Sussex

Posted 17 June 2009 - 06:30 PM

I had to go for the carb spacers for my twin carbs, seem to work fine :) I'm also running the pipe through a fuel filter.

I've also got a vacuum gauge connected on the same pipe which seems to be pretty inaccurate. Am I running too much off the pipe?

#237 liirge

liirge

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 4,097 posts
  • Local Club: EDMC AND MMC

Posted 17 June 2009 - 08:42 PM

This the spacer?
http://minispares.co.....20ADAPTOR 1.5
Pooky you got you Vacuum Guage before or after the fuel filter?

#238 1987_ParkLane

1987_ParkLane

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 2,671 posts
  • Location: N/A
  • Local Club: The Mini Forum

Posted 28 June 2009 - 11:15 AM

What would be the best MegaJolt for the Eaton 45 supercharger set up? The TPS or MAP set up?

Cheers

#239 jwb_moto

jwb_moto

    One Carb Or Two?

  • TMF+ Member
  • PipPipPipPipPipPipPip
  • 1,387 posts
  • Local Club: PMOC

Posted 28 June 2009 - 12:23 PM

Map if your using the HIF44 carb the tps stands for throttle position sensor so you need to attach this to the carb somewhere which would be difficult.

bit ot dan but how did you get your sc kit so cheap? is this the normal price for them? as im loking at them at mo.

#240 Ethel

Ethel

    ..is NOT a girl!

  • TMF Team
  • PipPipPipPipPipPipPipPipPipPipPip
  • 25,364 posts
  • Local Club: none

Posted 28 June 2009 - 12:24 PM

MAP is always the better option, TPS is only useful on systems with multiple separate intakes where getting a clean, average, MAP signal is difficult.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users