Introducing Variable Camshaft for S14 Engine.

[Anri]

Gents,

I am always pushing to improve the S14/S38 platform for top performance. This is for those who are interested in improving the power curve and taking advantages of Variable camshaft/s.

I have been working on this project for longer than I can remember and it's now time for testing: dyno, road, track. I have faced a lot of difficulties to make this work and at the same time I wanted to be very reliable and long lasting. I am doing the Prototype to my track S38 with around 11CR ratio and hi performance camshafts with knock sensors which is a must to have. I made 4 different lengths and shape velocity stacks to fine tune. With the variable camshaft/s, I can provide a wider range of desired goals.

S14/S38 will have great advantages with this option. I have done a lot of testing with diff set-ups on the dyno and now its a time to have all of them combined via the variable timing.

I am operating this via Haltech-2500 and manual cable for now but fly by wire will be employed right after I test this at the track and street. With Variable camshaft/s a knock sensors is a must.

I have an option for double variable timing but for now it will be a single.

Towards the end of this year, I will be ready to add this option to E30M3 alongside with a full engine rebuild. I will provide a full Warranty on the work/parts what I usually do when rebuild any engine.

Parallel with this project I am working on another foreign part which will further up the power. Whit the combination of the variable timing my engine package for hi output power in NA form will be up on offer to customers.

Regards,
Anri.

[evommm]

Great thanks for your efforts on making a 30+ year old car better

[Anri]

Great thanks for your efforts on making a 30+ year old car better

Thanks for your reply Evomm.

Whit my concept I am building the ultimate S14 engine which will put a big smile to E30M3 owners.

Regards,
Anri

[ADA///M]

sounds complicated! but thanks for keeping S14s going in the right direction! would love to see more pictures/info!

[Anri]

sounds complicated! but thanks for keeping S14s going in the right direction! would love to see more pictures/info!

Hi Adam,

Thanks for your reply.

I have to complete my mission by maximizing this platform and make people happy.

[jimmy p.]

Interesting...
I have often (waaaaay to often) thought I wonder what it would cost to slice two cylinders off of an S54 in the way they did to the S38 to make the S14...
This is a very interesting idea. I hope it comes to fruition.

[Anri]

Interesting...
I have often (waaaaay to often) thought I wonder what it would cost to slice two cylinders off of an S54 in the way they did to the S38 to make the S14...
This is a very interesting idea. I hope it comes to fruition.

Hi Jimmy,

Not possible due to bore, dome, valves list goes on and on...

Jimmy, say hypothetically it did fit. I have tested the flow on S54 head and also the S14/S38 and what and how far can be stretched...There is no S54 in exitance that can get near the cylinder head flow from S14/S38. Also, it will be disgusting to see the S54-2 top end in the E30M3 engine bay.

The better option I looked over long is to take the 2 cyl out of the S54 and make it S54/4cyl. But then for what ? S14 4cyl is still much better engine Big bore short stroke....S54 is the wrong way around.....Loooooooooong stroke and small bore! So its a bad ideal and a downgrade to work with S54 parts.

My variable timing project is ready. Need to swap my perfectly running engine, dyno tune it, test it at the track at 8000-8400rpm and road use as well.


Regards,
Anri

[///Mavrikno13764]

Out of curiosity, are you trying to achieve this using "free valve" technology?

I love the concept, but it also sounds really expensive.

[Anri]

Out of curiosity, are you trying to achieve this using "free valve" technology?

I love the concept, but it also sounds really expensive.

Hi,

No no no, not to that extend. Silly ideas are all over the place. But what in reality can be done and enjoyed is something completely different!!!

We all have crazy ideas for sure, but at what cost ?

My project indeed is not going to be for those who wants to replace the piston rings and keep the OEM pistons kind of a deal.

Building hi performance engine with all the parts that will bring food on the table is already expensive. Then engine management is a must to be able to make that engine run and theeeeeen the 3rd phase is if customer wants to add and take advantages from the Variable timing

Regards,
Anri

[stevesingo]

Anri,

Sounds interesting. There are many OEM solutions to vary valve timing, what are you looking to vary? Lift, duration, phasing and how?

[Anri]

Anri,

there are many OEM solutions to vary valve timing

Hi Steve,

Thanks for your reply.

I looked over every single OEM option in existence and reliability, weight, short parts life, is something I was not happy with. The stuff that has variable lift will require New cam-box design due to fitting the parts which are bulky and big, timing chain length, valve cover height etc etc As I mentioned above there are many great ideas of implementing this or that but at what cost ?

My choice stops at moving the cam back and forth or increasing overlap and decrease. Paralel with the Variable timing I am making another part which will help to increase the pick HP but not bellow 5252rpm or very little, but the significant gains will be after 5252rpm.

Having Variable timing will allow a smaller S14 displacement to produce at least the Torque between 3-6000rpm than let say standard 2.5 or even 2.7l but the same time the smaller stroke displacement can rev much higher and be able to increase HP per liter. But then if I take the 2.5-2.7 and apply that it will make even more torque and make the same amount of HP but at much lower revs. I have a HP per liter in mind and I may sound like a lunatic but per how I see the puzzle put together if I achieve at least 80% from my target then there will be no more E30M3 6cyl swaps in std hp form


These 3 foreign parts will create the "Ultimate S14" power curve. This is how I see it: Increasing Torque from as low 1300>2500 it will be fly by wire and the variable timing then from 2500>6000rpm will be the variable timing. Then variable timing will shut off and from 6000 to 8000 or even 9000rpm will the 3rd part hi air flow concept package.


Ages ago before I decided to push the S14/S38 platform I wanted to find out the cylinder head flow on various engines to compare. I have S14, S38, S54 S65, K24, K20, S62 cyl head flow.

Currently I am working on a test head to see how far I can stretch the head flow I have reached great numbers long ago but now I am back for more!!! Big ports slows the velocity down and makes the engine lazy etc but then the Variable timing with the fly by wire will restore the loses in the slower engine piston speed.


Thru the years I have tested all of this on my own engine. The different set up always worked on one area then other set up works in another area the 3rd set up then 4th set up....and then one always chases so called "Grey Area"

My idea is to combine them all in one.

At very last is esthetics. I want when the hood is open the S14 to look as OEM as possible. I don't want to see custom valve covers, custom camshaft carrier etc..


Regards,
Anri.

[stevesingo]

Interesting. Any sketches/pics?

[Anri]

Interesting. Any sketches/pics?

I am trying to post pics and there is message says "Invalid Image Geometry" I reduced the size to almost too small and still wont let me post.

Can some one help me to post the 3 pics I have ? To post images on this forum has always been a challenge..

May be forum staff can help ?

Thanks

[mwagner10702]

I am trying to post pics and there is message says "Invalid Image Geometry" I reduced the size to almost too small and still wont let me post.

Can some one help me to post the 3 pics I have ? To post images on this forum has always been a challenge..

May be forum staff can help ?

Thanks

Posting pictures to the forum has been broken for quite a while. It is nothing you are doing (wrong). You will need to host your pictures to a third-party such as Google photos, Microsoft OneDrive, etc and then link the photos to your post. It is an easy process once you get the photos on the third-party site.

I doubt the photo situation on this site is going to be fixed anytime soon.

[Anri]

Posting pictures to the forum has been broken for quite a while. It is nothing you are doing (wrong). You will need to host your pictures to a third-party such as Google photos, Microsoft OneDrive, etc and then link the photos to your post. It is an easy process once you get the photos on the third-party site.

I doubt the photo situation on this site is going to be fixed anytime soon.

mwagner,

Thanks for your reply.