Ariel.Club Forum

[quote=IanG post_id=304707 time=1620326753 user_id=4922]
Later in September found a new chap who was recommended by the Honda garage next door to me to get the car remapped ,down to London on a Saturday morning To get it sorted
[/quote]
Who did you use for the mapping? I've got a modified k20 and I think the map needs a bit more fettling so any recommendations would be appreciated.

Hello [mention]IanG[/mention] ,
sorry for my delay response.
I have send you a PN.

[quote=IanG post_id=304707 time=1620326753 user_id=4922]
Well car arrived home early March all ready for a summer then COVID-19 arrived
[/quote]
Same >:D here, but I have never driven so many miles with the Ariel as I did last year. :vroom:
This year it is much more complicated to drive here. Only added nearly 1000 miles on the clock this season. :'(

[quote=IanG post_id=304707 time=1620326753 user_id=4922]
First drive was interesting the pros and cons of a lightened flywheel, car takes off like a scolded cat and then you lose a lot of engine braking which was interesting at the first junction.
[/quote]
The flywheel on my K20 is a lightened. Which flywheel do you use now?
That's interested to hear that you lose a lot of engine braking. But when accelerating, the engine would have to rev up significantly faster - or not?

[quote=IanG post_id=304707 time=1620326753 user_id=4922]
Love the power range 8600 RPM with the toque of the 2.4 litre engine
[/quote]
Do you have set the limit to 8600 yourself or set your enigine builder this limit? I have read 9000 or 9500 will be easy possible.
I love very high RPM's.

[quote=IanG post_id=304707 time=1620326753 user_id=4922]
car ran faultlessly 1500 miles later we developed a slight miss fire
This fault resulted in time to understand the Hondata plunged it in uploaded the software and started to play
First screen was a load off interesting lines
[/quote]
The first 1500 miles driving without changing everything at the ECU mapping?
Really - and the 2,4 litre engine runs perfectly?

[quote=IanG post_id=304707 time=1620326753 user_id=4922]
Then back on the hub dyno all sorted 330 bhp at the wheels.
Well impressed.
[/quote]
330 at the wheels not at the crankshaft- that's very great and sounds the engine makes a lot of fun. :drool: :vroom:

You have mounted the JR SC too?
With intercooler or not?

Hi Curves Junkie
Well car arrived home early March all ready for a summer then COVID-19 arrived 🤬🤬
Gave me a couple of months to check everything over.
First drive was interesting the pros and cons of a lightened flywheel, car takes off like a scolded cat and then you lose a lot of engine braking which was interesting at the first junction.

Love the power range 8600 RPM with the toque of the 2.4 litre engine

A few runs out when lockdown ended mainly the Brecon Beacons
Then planning the Welsh weekend early September

Lockdown ended off to Wales for a long weekend with a great bunch,car ran faultlessly 1500 miles later we developed a slight miss fire
This fault resulted in time to understand the Hondata plunged it in uploaded the software and started to play
First screen was a load off interesting lines 🙈🙈
It’s a great bit of kit you can see all the sensors, fuel consumption and a load off other things

Later in September found a new chap who was recommended by the Honda garage next door to me to get the car remapped ,down to London on a Saturday morning To get it sorted

First fault was the fuel mixture at 4000 RPM Jess rewrote the map and then the
road test .This was interesting I don’t think he could open his eyes :H: :H:
Then back on the hub dyno all sorted 330 bhp at the wheels.
Well impressed.


Over the winter covered it up and forgot about it.
Spring arrived a few mods and just waiting for the weather to improve

[mention]IanG[/mention] any new news from your car after one year?
Could you solve the hondata problem?

Can we get some more pics Ian? Now phase 1 is finished and ready for the running in. 8)

I am looking forward to seeing the hybrid BEAST. >:D

Cheers :tu:

Hi Levo
Car was delivered yesterday not had a run yet hopefully this weekend
Thanks Ian

Hi Ian any more news on the car is it running fine Levo.

It appears the head is flowing nicely up top. With the original 9,000 rpm+ rev goal it should make more power if revved more. Charge air too hot or reliability concerns exist for revving it higher? Stock bottom end and heads can do 8,000 rpm all day so all those good $$ parts in this build are not returning any more power if limited to 8K rpm.

I second the sleeves comment. Cooling is a concern for applications other than drag racing. The AMG A45 engine is closed deck but that one is cast as such from factory and built with effectively limitless engineering hours.

Also second the warm up comment. I installed an electric water pump to heat up the engine more effectively on cold days. It's important to prevent blown headgaskets and the forged pistons are far more likely to rattle in the bore. My build uses Mahle forged units which are somewhere between the super strong forged slugs and the OEM cast ones in both expansion and strength.

Love how original this build is. Should be oodles of fun to drive in the super light Atom. Thanks for sharing! :vroom:

Hi Ian just looked through some of the photos of the engine the closed deck block looks like a LA sleve job they are well known for the work in the world of engine machining. How ever the closed deck you have is for i.e. 1000+hp and has been known to have over heating problems its intended for dragsters that run for 5min i.e. not enough water flow i would take this up with the builder as you may have recourse later. A K24 standard block will run at 400 hp all day long without any internal work and who are the rods made by as all high end rods have the name etched in them. Ps not trying to P you off just watching your back Levo.

Hi Ian you are right hot expanded air does not burn as nice. Keeping the JR super charger will give reliability but has its limits however the engine you have built will stand 500 hp and run fine one of the nicer options is a rotrex and a air to air inter cooler there are a few different kits about there is a atom owner in Scotland who has blown a couple of engines up with Meth so make sure that system is bomb proof. The Meth kit might be cheap but could cost a lot in the Short term. You should be able to sell the Jr for a few quid as the Honda Boy racers like them this could then go towards a nice charger. I would run the engine in on a mild tune and then save up a few quid and go for it as all the money you have spent on the engine will not be used .Ps a little tip let the engine warm up fully before welling it as forged pistons have more play in them than the standard silicon based cast one as they expand a lot more so if you heat the piston to quick you can get a cold seizure the best pistons to use are Nippon Racing Pistons (not NRP) which are cast spun with up to 18/20 % silicon so they hardly expand at all and will out live a genuine Oem by up to there times and will handle about 650 hp. A friend of mine runs side cars i.e. Isle of man TT and is fitting a meth kit but it will be only activated by holding a button just to give it a boost out of a corner and down the strait but you would need a nice Ecu to do that. I wish you all the best with it and will look forward to seeing you and the car one day. Cheers Levo.

[quote=IanG post_id=298139 time=1583005526 user_id=4922]
Hi Levo
True but it’s the intake temps that kill the power
There are no coolers on the car so no way of cooling the air at present that could be the next route
[/quote]

Meth kit will be the cheap option or charge coolers but significant cost. As we discussed Ian, let me make the mistakes and hopefully we all learn something. Let's get the injector moved to the inlet manifold and see what difference it makes. If it helps, I think it's an easy mod for you.

Hi Levo
True but it’s the intake temps that kill the power
There are no coolers on the car so no way of cooling the air at present that could be the next route

Hi All. Ian 1.6 bar of boost is about 23 psi which would give about 450 plus bhp? Levo.

It really is.

Cheers,
Hedge

Never been to Spa, but plan to go hopefully this year to see if it is as good as everyone says! :)