Honda appreciation thread
Discussion
chrismc1977 said:
Remembering VTEC @ 3600 isn’t suddenly gonna give it a VTEC-yo kick @ 3600.
The mapping will now be smooth & progressive with no jump in power a la VTEC whatsoever
Pardon my ignorance in that case but if it's pulling in VTEC from 3600 to 8000 then it must be quicker than a relatively short 6k to 8k? The mapping will now be smooth & progressive with no jump in power a la VTEC whatsoever
From new I had an Accord 1.8, Civic Type-R (EP3), Accord Type-S (CL7?). All did big miles (100k+ over 2 years), though the EP3 was pretty unreliable. The other two were almost faultless.
Also had a MK2 CRX VT and a DC2 Integra, both second hand low miles examples.
When I look at the range in the UK now, it's pants. Must suck to be a Honda salesman.
Also had a MK2 CRX VT and a DC2 Integra, both second hand low miles examples.
When I look at the range in the UK now, it's pants. Must suck to be a Honda salesman.
Leftfootwonder said:
Vtec at 3600! Have you put it against the clock since? What sort of acceleration times have you got now?
I've not mate no. It is night and day quicker tho but the manifold really helps As standard is very restrictive. The rev limit has been increased to 8800rpm so I'd expect it be quicker as 60mph now achievable in 2nd gear instead of having shift into 3rd as standard. It's mid range it's got most gains Leftfootwonder said:
Pardon my ignorance in that case but if it's pulling in VTEC from 3600 to 8000 then it must be quicker than a relatively short 6k to 8k?
No. Not necessarily.The VTEC changeover is simply when the engine switches from the low cam lobe to the high cam lobe.
The low lobe gives good low end torque & driveability & the high lobe makes good top end power & allows the engine to rev out much further.
Low lobe doesn’t work up top & high lobe no good low down
The changeover normally occurs at higher rpm ~5500-6000 so the high lift lobe takes over just before the low lobe peaks.
Using the high lift too early would result in a loss of torque as there isn’t sufficient gas speed to tolerate the extra valve opening.
As such overlapping the power curves from low & high lift cams will give an optimum changeover point...
By use of clever mapping this can altered to suit &/or VTEC disabled at part throttle etc.
Sub 4000rpm sounds very very low to me- if nothing else from the point of view of economy!
But as for the car going nuts on ‘VTEC’ below 4K all the way to 8k+ then no not at all
i-VTEC is a strange old thing anyway as it can change the cam angle from (I think) +50 degrees to -50 across the entire rev range. Watching mine being mapped was interesting. There’s a different table for each 10 degrees of timing so you can alter it in a lot of ways.
The older VTEC systems were more of a ‘switch’ where it engaged the higher can lobes at a certain RPM and that was about it. Hence the older (B/H/D series) VTEC ‘kick’ which the newer K series lost some of.
The older VTEC systems were more of a ‘switch’ where it engaged the higher can lobes at a certain RPM and that was about it. Hence the older (B/H/D series) VTEC ‘kick’ which the newer K series lost some of.
Butter Face said:
i-VTEC is a strange old thing anyway as it can change the cam angle from (I think) +50 degrees to -50 across the entire rev range. Watching mine being mapped was interesting. There’s a different table for each 10 degrees of timing so you can alter it in a lot of ways.
The older VTEC systems were more of a ‘switch’ where it engaged the higher can lobes at a certain RPM and that was about it. Hence the older (B/H/D series) VTEC ‘kick’ which the newer K series lost some of.
I forgot the duration was mappable on iVTEC too. That’s why it’ll tolerate a lower VTEC point.The older VTEC systems were more of a ‘switch’ where it engaged the higher can lobes at a certain RPM and that was about it. Hence the older (B/H/D series) VTEC ‘kick’ which the newer K series lost some of.
The old school mapping was all done deliberately by Honda to create the surge of acceleration on the B H & D series engines when they hit VTEC
With a mapped car the changeover is normally moved down 500-800rpm & mapping tweaked to make the changeover pretty seemless.
In my old DC2 tweaking the mapping and changeover point gave ~15hp between 4-6k revs. Huge improvement.
The lack of any big VTEC-kick at changeover is a good sign as it normally means the engine is on song pre-VTEC
chrismc1977 said:
The old school mapping was all done deliberately by Honda to create the surge of acceleration on the B H & D series engines when they hit VTEC
This is also true on the K series enginesThese Hondas are also mappable for engaging the second cam profile depending on throttle position as well, VTEC is a very clever system really
Owned a few Honda’s now, two Civic Tourers,, four Accords and two more entertaining Honda’s;
1998 Motegi Prelude in Sparkling Yellow. If I could find another in this colour, as a genuine Motegi and not the fakes that often pop up, I’d be all over it. Lovely car, maybe a little too heavy which affected its acceleration. Drove mine across Europe and it never let me done. The photo is at the top of Stelvio Pass
Current weekend car, 2005 Premier Edition EP3. It’s completely standard and I’m intending to keep it that way. This car came on the market when I turned 17, and I remember joining the owners club wishing I could afford one. It didn’t happen until owning the Prelude and a VX220, but last year I finally gave in.
My Civic Type R, it came with factory fit leather, air con & fog lights. Since then it's had a few upgrades in the steering/suspension department with eibach springs, adjustable arms , new links/rod ends/ball joints & poly bushes before being setup with slightly more aggressive geometry. On the performance side it has a modified intake & 2.5" exhaust system an really needs a K100/KPro if i want anything more from it.
I'm a bit of a wheel collector & have several sets of wheels that fit on this car, It's currently on some Volks Rays Daytona forged alloys, these are 17x7.5 with 225/45 RE70 tyres, they weigh 3.3Kg per corner less than the standard Type R Enkei.
Other times I have a OZ F1 which are OEM Mitsubishi Evo alloys which have some AD08r on which were meant to be my track tyres this year but I'm not sure they will get a chance to get used the way things are going. I've also got a set of Advans that need some tyres and did have a little spell of running 16" Volk Racing 3 piece split rims.
I've had it a couple of years now and it's been absolutely spot on, so much fun when you want it to be. Aside from a few little niggles nothing major has gone wrong and any other money spent has been upgrades/ general age maintenance.
Genuinely not sure what to upgrade to /add to the fleet that could make this redundant, silly ideas like K20 powered Mr2/MX5s appeal;-)
quick camera phone pic*
I'm a bit of a wheel collector & have several sets of wheels that fit on this car, It's currently on some Volks Rays Daytona forged alloys, these are 17x7.5 with 225/45 RE70 tyres, they weigh 3.3Kg per corner less than the standard Type R Enkei.
Other times I have a OZ F1 which are OEM Mitsubishi Evo alloys which have some AD08r on which were meant to be my track tyres this year but I'm not sure they will get a chance to get used the way things are going. I've also got a set of Advans that need some tyres and did have a little spell of running 16" Volk Racing 3 piece split rims.
I've had it a couple of years now and it's been absolutely spot on, so much fun when you want it to be. Aside from a few little niggles nothing major has gone wrong and any other money spent has been upgrades/ general age maintenance.
Genuinely not sure what to upgrade to /add to the fleet that could make this redundant, silly ideas like K20 powered Mr2/MX5s appeal;-)
quick camera phone pic*
The s2000 I shan't be mine for much longer as it is up for sale in the classfieds here... 
. Five years of joy with it. I know I'll never find another in lime for sale again too.
My old VFR800, miss this bike terribly and will have another soon when funds allow! V4 engine through the delkevic cans on VTEC... what a sound!
. Five years of joy with it. I know I'll never find another in lime for sale again too.My old VFR800, miss this bike terribly and will have another soon when funds allow! V4 engine through the delkevic cans on VTEC... what a sound!
Cabrony said:
Thought I should oblige as we haven't had a CRZ yet. Bought in January to replace my Peugeot RCZ.
It could really do with another 20-30hp which the face-lift fixed to a degree. An interesting place to sit and relatively fun car to drive though. Its very good in heavy traffic and you can seemingly coast in gear forever.
You can get it to move around a little when driving hard.
More detail on this please , petrol ? Anything special about it . It could really do with another 20-30hp which the face-lift fixed to a degree. An interesting place to sit and relatively fun car to drive though. Its very good in heavy traffic and you can seemingly coast in gear forever.
You can get it to move around a little when driving hard.
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