Ausmini
It is currently Fri Mar 29, 2024 9:23 am

All times are UTC + 10 hours




Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: plenum / runner lenth
PostPosted: Fri Dec 16, 2016 5:04 pm 
Offline
998cc
998cc
User avatar

Joined: Tue Sep 19, 2006 1:20 pm
Posts: 883
Location: Airport West
Howdy fellow mini'ers .....

I am building an inlet manifold for a 7 port head for general road use that will run { close to } port injection ... now the big question is ..........

A, inlet runner length ....... any clues for torque ?

B, volume of runners / plenum ? I have been told 2 x engine capacity so 1293 x = 2.586 cc or close to that.

_________________
120bhp with 450kg just fun waiting to happen

We were prob. drunk when we set it up last and thought this will be a good idea


Top
 Profile  
 
PostPosted: Fri Dec 16, 2016 6:37 pm 
Offline
1098cc
1098cc

Joined: Wed Nov 24, 2004 10:23 am
Posts: 1488
Location: Armidale, NSW
Torque is very strong on my 1275 (Spot) it will pull 5th down to 40km/hr but to get it that low you need your foot on the brake...

Inlets are approx 24 - 25cm long OD of runners is approx 30mm or 24mm ID?

Plenum volume? I couldn't tell you it's a funny shape...

Image

The manifold was made by a guy in Wollongong who specializes in these things...

It's a CG13DE but the bore and stroke are the same as a 1275 A series, at the same revs they should suck similar amounts of air however being 16v will make some difference.

More info here http://www.theminiforum.co.uk/forums/topic/253043-spot-the-micra-mini/page-4 including a dyno sheet (torque figures on the dyno sheet are weird I worked backwards from power and revs to find torque (in the build thread). Torque is similar to an A series but is there very low down and stays pretty constant.

_________________
---
Roads need more corners
A Deluxe(CG13DE), 2 Clubbies(998 and 1275) and 2 Morris 1100Ss


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC + 10 hours


Who is online

Users browsing this forum: No registered users and 27 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.