P.E.R.F.O.R.M.A.N.C.E........

414i2006 · Post by **414i2006** » Wed Aug 23, 2006 6:02 pm

Hi everyone,

I am just wondering what i can do to my 216 Coupe Honda SOHC engine for more performance without going into "Internals"....

I've got no idea on these engines as of yet so lets talk outside the block

...

Throttle Bodies,Exhausts,Air Intake etc....... What can i do and where can i get the parts?

TRUST ME TO SPELL THE TITLE WRONG :@ GRR

Si · Post by Si » Wed Aug 23, 2006 6:05 pm

Drop a Dohc in. Instant 15hp+ increase

414i2006 · Post by **414i2006** » Wed Aug 23, 2006 6:08 pm

Preferably not removing my engine as finding a DOHC with an Automatic Box is going to be a biatch bcus i have no idea how todo the change of the boxes and would cost me about Â£450 to have it just attached in a garage.......

Next Idea....

Leo · Post by **Leo** » Wed Aug 23, 2006 6:13 pm

Just do as you suggest - filter and exhaust to start with.

WELZ · Post by **WELZ** » Wed Aug 23, 2006 6:13 pm

Well there are alot of things you can do!

If you want to stay NASP then a good intake/header/exhaust combination will improve the car quite a bit! Chipped ecu's are also available from Jonny on here, which have a better fuel map, launch control etc etc!

A few people on here have Turbo'd the D16, and kits are available from the states but your looking at about 1k for a decent gready, ellbrock kit. Or you could make your own out of different parts you can pick up in the for sale section and ebay! Most bump it upto 180bhp ish depending what boost, turbo etc etc you use!

Lav has supercharged his coupe which has gained some really good results, look on his thread to find out more!

Also you say your cars an auto? How about a swap to manual?

Another thing to do (which i have done myself) Is to do an engine conversion to D16a8 or a9 (dohc) Engines are cheapenough and kick out around 130bhp @ the fly which much improvement in torque.

Best places to take a look at mods for these engines would be honda sites such as:
http://www.Honda-tech.com
http://www.turbod16.com
http://www.honda-crx.co.uk

Have a look around! Theres alot more stuff available than you first think!

Ad

ADC-tomcat · Post by **ADC-tomcat** » Wed Aug 23, 2006 7:29 pm

induction kit on auto no no

we fitted ours off gsi

it sounds hsit

Leo · Post by **Leo** » Wed Aug 23, 2006 10:18 pm

Why would an induction kit on an auto be a no-no?
Can't see why it'd sound bad? Got to be good for some extra power surely

lav · Post by **lav** » Wed Aug 23, 2006 10:36 pm

Insurance will be uber high with any mods at the mo.

I dont want to be a party pooper but these will give you atleast 109bhp :wink:

Jonny 5 · Post by **Jonny 5** » Wed Aug 23, 2006 10:51 pm

Leo wrote:Why would an induction kit on an auto be a no-no?
Can't see why it'd sound bad? Got to be good for some extra power surely

a) it would sound like one hell of a slipping clutch

b) not really guaranteed to make power on a Honda intake setup.

al_leeds · Post by **al_leeds** » Sat Aug 26, 2006 9:51 am

hello all

Im a noob on here but have the same engine and auto box in my 216 gsi and have had a green induction kit and a LongLife SS cat back exhaust on mine for a good few years- not had it on a rolling road but it does sound spot on (especially when the box kicks down

), never given me any probs...

im also looking at trying to eek some more horses out and the consensus amongst the people I ask is to drop a DOHC engine into it.. my only concern is if the auto gearboxes are compatible? owned a 416 GTI auto with the dohc engine for a little while (before it got nicked!) and that was a lot of fun!

oh and chipped ecu's- is this just a plug and play mod? or is there any other work that needs to be done?

southside · Post by **southside** » Sat Aug 26, 2006 1:01 pm

lav wrote:Insurance will be uber high with any mods at the mo.

I dont want to be a party pooper but these will give you atleast 109bhp

You tell your insurace about an induction kit and exhaust? I know your supposed to but how many people actually do? I know a few people that have crashed with full bodykits e.t.c on their car un declared and the insurance have still payed out

lav · Post by **lav** » Sat Aug 26, 2006 1:25 pm

southside wrote:
lav wrote:Insurance will be uber high with any mods at the mo.

I dont want to be a party pooper but these will give you atleast 109bhp

You tell your insurace about an induction kit and exhaust? I know your supposed to but how many people actually do? I know a few people that have crashed with full bodykits e.t.c on their car un declared and the insurance have still payed out

YES ive told my insurance about every modification on my car. Rather pay an extra 55p a day to include my modifications (and some improve performance significantly) and secure a payout. Say you crash into a half decent car at Â£8000 plus loose your car and your insurance doesnt payout.. You'll soon wish you put those pennys in a jar for the insurance

rover_coupe_216 · Post by **rover_coupe_216** » Sun Aug 27, 2006 12:09 pm

al_leeds wrote:oh and chipped ecu's- is this just a plug and play mod? or is there any other work that needs to be done?

Hmm... Wondering that too...

Post by **MarkCoupe** » Sun Aug 27, 2006 12:13 pm

Is it really worth it on an autospastic?

414i2006 · Post by **414i2006** » Sun Aug 27, 2006 9:14 pm

Yeah its worth it because when it becomes a DOHC Manual when this engine finally goes pop for some "UNKNOWN" Reason

It will be alot more fun

lol....

al_leeds · Post by **al_leeds** » Sun Aug 27, 2006 9:43 pm

It is worth it for me- I have no interest in a manual- its too much like hard work!

Nah my dad had a problem with his legs which meant he couldnt drive a manual, so in our house we grew up with auto boxes...

Stevo135+ · Post by **Stevo135+** » Sun Aug 27, 2006 10:55 pm

D16 A8/A9 would'nt IMO be the best thing to do if your driving with an auto box. The DOHC engine's torque peak is higher up the rev range, and that isn't the best way to go faster with an auto.

What kind of power increase/bhp target are you aiming for, and how insistant are you on keeping the SOHC D16 and or autobox?

The enclosed filter/panel filter option will sort out the induction side of things, and a de-cat+ a decent exhaust manifold will give good breathing on the other end. TBH if i was tuning an auto i would be looking for torque and smooth progressive power through the rev range. The only thing that could help here on a D16 is a modifed flowed head, 3 angle valve job, and more compression. This would give slight gains, but over most of the rev range, compared with anything else you might do.

The bottom line is that to get much more torque you need more capacity, thus a bigger engine, which isn't the way you want to go atm.

ruderov · Post by **ruderov** » Sun Aug 27, 2006 11:06 pm

u can put sohc vtec heads on them engines (my friends a honda wizard)

lav · Post by **lav** » Mon Aug 28, 2006 12:19 am

ruderov wrote:u can put sohc vtec heads on them engines (my friends a honda wizard)

and get less power than a DOHC non-vtec?

ruderov · Post by **ruderov** » Mon Aug 28, 2006 8:44 am

rover_coupe_216 wrote:
al_leeds wrote:oh and chipped ecu's- is this just a plug and play mod? or is there any other work that needs to be done?

Hmm... Wondering that too...

if u know sumone whos a honda wizzard thtas me

then all he does 2chip em is take em apart and put another chip inside the ecu i dont know what sort of chip it is but il ask him also if u want more power out of it stick a sohc vtec head on as lav said not as much power as a normal dohc but it will b faster and more power full il ask friend if hes got one

Post by **MarkCoupe** » Mon Aug 28, 2006 9:23 am

ruderov wrote:not as much power as a normal dohc but it will b faster and more power full il ask friend if hes got one

Err

al_leeds · Post by **al_leeds** » Mon Aug 28, 2006 10:01 am

Stevo135+ wrote:D16 A8/A9 would'nt IMO be the best thing to do if your driving with an auto box. The DOHC engine's torque peak is higher up the rev range, and that isn't the best way to go faster with an auto.

What kind of power increase/bhp target are you aiming for, and how insistant are you on keeping the SOHC D16 and or autobox?

The enclosed filter/panel filter option will sort out the induction side of things, and a de-cat+ a decent exhaust manifold will give good breathing on the other end. TBH if i was tuning an auto i would be looking for torque and smooth progressive power through the rev range. The only thing that could help here on a D16 is a modifed flowed head, 3 angle valve job, and more compression. This would give slight gains, but over most of the rev range, compared with anything else you might do.

The bottom line is that to get much more torque you need more capacity, thus a bigger engine, which isn't the way you want to go atm.

personally I am fairly stuck on the auto box, and dont want to change that- which is why i have been looking for another dohc 416gti auto for the past 6 months- they are rarer than rocking horse poo because I cant find any!

I dont have any specific target in mind, I just wanted to find out if there were any fairly straightforward mods that can be done to extract a little more useable performance form the engine without having to resort to complicated (and expensive!) work with the engine internals. Two reasons for this- firstly I am rubbish with anything under the bonnet- fitting an induction kit is about the limit of my skills! and secondly there isnt really a place around here that I would trust to get the work done from. I was thinking of something like this:
http://cgi.ebay.co.uk/88-00-Honda-CRX-d ... dZViewItem

but am unsure if the power increase claims are accurate..

rover_coupe_216 · Post by **rover_coupe_216** » Mon Aug 28, 2006 10:21 am

From what I've read on the forums, the Honda engines are really tuneable with some impressive gains just from changing the induction and exhaust system but I haven't seen anyone yet who has bought one of those manifolds (I haven't been around that long either so that doesnt mean that no one has got one though). It's got to be worth the Â£100 notes to find out though, looks damn sexy!

At the moment I'm looking in to having the engine management chipped or remapped but I'm struggling finding anywhere or anyone to do it.

414i2006 · Post by **414i2006** » Mon Aug 28, 2006 8:02 pm

Well last night shown the final straw... it's having a DOHC Now

But its staying automatic with the ECU Chipped to allow it to rev much higher!

Thus the revs should be kind of equal to a manual.... i hope.... maybe its a load of doggies?? HeLp Me!

ruderov · Post by **ruderov** » Mon Aug 28, 2006 10:16 pm

i think u autobox will bolt straight to the dohc engine just the dohc box has better ratios not sure though but i do know that friend dropped dohc in his rov coupe and he used his sohc gearbox if that helps

WELZ · Post by **WELZ** » Mon Aug 28, 2006 11:26 pm

414i2006 wrote:Well last night shown the final straw... it's having a DOHC Now But its staying automatic with the ECU Chipped to allow it to rev much higher!

Thus the revs should be kind of equal to a manual.... i hope.... maybe its a load of doggies?? HeLp Me!

Im not sure i'd want it to rev more than 7300rpm tbh!

mkandy · Post by **mkandy** » Tue Aug 29, 2006 5:59 pm

Why not just buy a manual?

Steve220 · Post by **Steve220** » Tue Aug 29, 2006 9:05 pm

mkandy wrote:Why not just buy a manual?

Wookie - he's too impatient and wanted a cheap 216 coupe, no matter what it was.
Steve