Which 2.8?

[tiggercoco]

Hi am looking to buy a 2.8 pre-facelift as I love the M type widebody.

Am I correct in thinking some engines have a single vanos and some double?...does it make any difference which one you get as to tuning possibilities to get it up on a par with the 3.0?....or are they both equal?...

Thanks

[alec.m]

You are correct. The single vanos is easier to convert to the 2.5 inlet manifold with the bored out throttle body, a mod which reputedly brings it up to 3.0 performance. It is possible to do the same to a twin vanos but there`s only one I know of been documented. There are issues doing it to a twin vanos but I don`t know what they are. Try a search on here or google.I`m sure there`s some youtube vids on this subject too.

[gookah]

i have done my twin vanos 2.8. no issues

[lightning]

I had a single VANOS 2.8 before my 3.0 and never felt it wanting for power in standard form. I didn't really feel the need to modify the engine. It pulled like a train from about 1500 rpm and would wipe the floor with my friend's newer MX5.

[Bonzo]

I've heard these modifications improve top end power, but move the maximum torque higher up the rev band. ! love my low down torque, it surprises many when accelerating away in top when they think it's in third! It still has good grunt up to around 5800 r.p.m. and a change up into the next gear.



Bonzo. (single vanos)

[Rafolian]

Never driven a standard 2.8, but my single vanos had the mod done before I bought the car and the low down torque is fantastic. It will pull in third from 800 rpm sweet as a nut, then will scream up to the redline if required no problem.

[Bonzo]

Around 5800 is enough really I think to get into the peak torque revs for the next upshift. I don't hammer it that much very often, sometimes, when opportunities arise I like to drive swiftly but smoothly, which you can do without approaching the red line.



Bonzo.

[gookah]

It knocked 1/2 second off my time at SantaPod... and 4000 to 6000 rpm the car has another boost, great for dropping a cog when overtaking.

[Bonzo]

I've heard these modifications improve top end power, but move the maximum torque higher up the rev band. ! love my low down torque, it surprises many when accelerating away in top when they think it's in third! It still has good grunt up to around 5800 r.p.m. and a change up into the next gear.



Bonzo. (single vanos)

There is an interesting article on .org which seems to bear this out. It's on the performance section.