MG-Cars.info
MG MGF Technical DOHC or not? BBS discussion at MG-Cars.info
MG-Cars.info
Welcome to our Site for MG, Triumph and Austin-Healey Car Information.
Recommendations
Parts
MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.
MG MGF Technical - DOHC or not?
| Can anyone advise me please. The 1.8 vvc is a DOHC engine I am understand. Is the 1.8 MPI a single OHC motor? Many thanks for your time. Chris |
| Chris |
| Chris, They are both DOHC,but the VVC has variable valve timing wheras the MPI has fixed cams. Robert |
| R J Hemphill |
| the VVC is triple cam if I understand it correctly |
| Will Munns |
| The VVC is Very Very Complicated |
| Johan Slagter |
| The VVC is very very Clever!!!!! |
| Graeme A Glasgow |
| Some of the smaller capacity k Series engines are single OHC |
| Bob Millar |
| were - min spec now 1.1 16v |
| Patrick Beet |
| To add further confusion : A well known quiz on rallies; "How many cams on a MFG VVC ?" Answer: 5 in all, 4 on the inlet and one outlet cam. / Carl. |
| Carl Blom |
| Hi Carl, How many Camshafts, I hope, as there are 16 cams on the VVC and mpi - as you well know! Regards, Kes - just nit-picking. |
| Kes |
| Hi Kes, yes- of course - but for me cam is the whole unit as short for "camshaft". Difficult this language.... When we are at it, ever so often I see the word "breake" instead of "brake". Is this an accepted english spelling of the word brake as in brakepads etc ? BR, Carl. |
| Carl Blom |
| >Is this an accepted english spelling No, it's common english mispelling! Four inlet cams? is that one per cylinder - or is there some sort of caming the camshaft (IYSWIM) |
| Will Munns |
| My understanding is that the inlet side has 2 half hollow camshafts and 2 other camshafts which pass through the middle; at first appearances it therefore looks like only 2 camshafts but it's actually 4. There's a good site explaining it all somewhere, I'll try to find the link... Tim. |
| Tim Jenner |
| Not the link I was looking for, but there's an explaination on this very site... "The first obvious thing one sees is that the inlet camshaft is not a single casting as in most engines, but is in four sections. Inlet valves for cylinders 1 and 2 are controlled by lobes on a half cam-shaft driven by a VVC Mechanism (the most important components of which are two drive rings) at the front of the engine. Inlet valves for cylinders 3 and 4 are controlled by lobes on a half cam-shaft driven by a second VVC Mechanism (incorporating its own drive rings) at the rear of the engine, the drive for the latter is taken from the exhaust camshaft." See http://www.mgcars.org.uk/news/news174.html |
| Tim Jenner |
| So that'll make the VVC a POHC... |
| Rob Bell |
| Yep i agree, 1.8 K4 MPi is DOHC, 1.8 K4 VVC is QOHC DOHC is dead!, Long live the quin-cam!!! LOL :-) SF |
| Scarlet Fever |
| The VVC still says "Twin Cam" on the cam covers though...maybe we could get some replacements made up! :) |
| Tim Jenner |
| Okay, quin sounds better than pent-cam Andy - and is probably more correct too! ROFL >> maybe we could get some replacements made up! :) << LOL Tim - yup, that'd be kewl! 8o) |
| Rob Bell |
| I'm still waiting for someone to come up with some MG branded spark plug covers (like the Lotus ones) - hint hint! |
| Tim Jenner |
| I feel the same Tim :-) SF |
| Scarlet Fever |
This thread was discussed between 04/06/2004 and 07/06/2004
MG MGF Technical index
This thread is from the archives. Join the live MG MGF Technical BBS now