RLC has gone......Shugs video tribute to the SE legend!

Andy G · Post by **Andy G** » Mon Apr 30, 2007 1:42 pm

Hoping that we should get it with these mods and a trip to fine tune it

Sanjøy · Post by **Sanjøy** » Mon Apr 30, 2007 1:43 pm

MMCs ?

robin · Post by **robin** » Mon Apr 30, 2007 2:25 pm

MMCs aren't allowed - you have to run with steel/iron disks.

I think we'll get close to 170 with those mods - I had a very similar engine back in 2001 that was a 135sport plus 270's and that made 160 once mapped at emerald with an M3DK. I still had a cat on that car and 48mm throttle body. Also we'll allow a higher rev limiter I think (after all, it's only got to do 20 minutes at a time), so conservatively 165 should be achievable (with nothing below 2,500!).

Sanjøy · Post by **Sanjøy** » Mon Apr 30, 2007 2:54 pm

robin wrote:MMCs aren't allowed - you have to run with steel/iron disks.

Tough talking regs, are you allowed the Force ?

jamie · Post by **jamie** » Mon Apr 30, 2007 2:59 pm

Sanjoy wrote:
Tough talking regs, are you allowed the Force ?

20kg balast

roadboy · Post by **roadboy** » Mon Apr 30, 2007 7:08 pm

robin wrote:I think we'll get close to 170 with those mods.

I don't think you'll make anywhere near 170 without extra headwork, particularly around the combustion chambers.

robin wrote:I had a very similar engine back in 2001 that was a 135sport plus 270's and that made 160 once mapped at emerald with an M3DK.

There's a big step from making 160 to making 170.

robin wrote:Also we'll allow a higher rev limiter I think (after all, it's only got to do 20 minutes at a time.

If you're running a Kent 1812 inlet cam (may be wrong here) I would be very wary of your rev limit on standard hydraulic followers and also would not be running standard valve springs either.

IMHO its worth doing the extra head work as its not just about peak power figures. The engine will be far better throughout the rev range.

/2p

Dan@JPS

Stu160 · Post by **Stu160** » Mon Apr 30, 2007 8:03 pm

I had 173 in my sport 160 with on the standard throttle body,cams etc,although they were timed a bit differently.Head was ported a wee bit,but the chambers were left alone I think(cant remember,it was so long ago)
Not sure about idle control with those cams ,are you using an emerald?
But if it does work,it will be nice

Stu

Andy G · Post by **Andy G** » Mon Apr 30, 2007 10:55 pm

yeah mk3 emerald. More work done tonight!

Off came the gearbox, clutch, flywheel and inlet manifold. I'm still learning as we go through it.

Back in amongst it again tomorrow night, when hopefully the Elise parts shipment will have arrived, and project Rough Love (as it is quickly becoming known) will gather futher momentum.

Really enjoying it. What a great little beast we are going to have, and I'll be very proud to be racing it

robin · Post by **robin** » Mon Apr 30, 2007 11:09 pm

Dan, we're using 285H - not ideal on standard throttle body, but that's the regs.

You're probably right about the 170, though I think 165 is possible.

I have a head sitting here with bigger inlet valves and chamber work that would do the trick I am sure (see campbell's avatar), but we're not allowed to use bigger valves, so we decided to stick to the standard pattern 135R head which is deffo allowed and as cams are free we could then use the 285Hs.

I think the regs are odd in that respect - no big valves but you are allowed a PTP170, which has big valves?!

I wasn't thinking about 8,500 RPM for the rev limiter, but I reckon 7,300 would be perfectly OK.

I guess we'll see when we come back from Emerald, but I'll be disappointed if we don't get at least 165.

We're using a close ratio box, so we don't need a wide power band (which is probably just as well as I doubt we'll get one).

Cheers,
Robin

robin · Post by **robin** » Mon Apr 30, 2007 11:12 pm

Really enjoying it. What a great little beast we are going to have, and I'll be very proud to be racing it Very Happy Very Happy

Until the engine does a shoomer, at which point you'll have a whole raft of excuses pre-made (it was that Robin bloke, it's all his fault!).

Cheers,
Robin

Michael · Post by **Michael** » Mon Apr 30, 2007 11:54 pm

Andy get some pix up

roadboy · Post by **roadboy** » Tue May 01, 2007 2:06 am

Hi Robin,

I know you can't use use big valves. Like you say, the regs are a little strange as they allow the PTP170.

I would say 7600 rpm is a sensible limit for a race engine of this spec so 165 should be possible without headwork. Depends on the 135R head though as they were a bit hit and miss.

Cam timing will also play a big part.

285H should be ok but as far as I am aware you do need to run different valve springs for these. 11mm of lift is too much for standard springs.

Inlet plenum (plastic or alloy)?, exhaust manifold?

If you are running the standard exhaust manifold and downpipe it will definitely be worth cleaning up the excess weld around the flanges to improve gas flow. Not sure the large bore 4-2-1 is any advantage at this stage of tune.

Should be a nice safe bet anyway and I can't wait to see the curve.

ECU turned up today btw.

Cheers

Dan

robin · Post by **robin** » Tue May 01, 2007 7:48 am

Hi Dan,

roadboy wrote:Hi Robin,

285H should be ok but as far as I am aware you do need to run different valve springs for these. 11mm of lift is too much for standard springs.

Feck - I didn't think of that - they came fitted to another head I had, which with hindsight must have some heavier springs fitted ... OK, we'll need to remove the cylinder head and get some new springs, or run with different cams (nooo, that means less power) - I know you could do this with the head fitted and bits of string, etc., but too much of a faff when the engine is already out of the engine anyway.

Inlet plenum (plastic or alloy)?, exhaust manifold?

If you are running the standard exhaust manifold and downpipe it will definitely be worth cleaning up the excess weld around the flanges to improve gas flow. Not sure the large bore 4-2-1 is any advantage at this stage of tune.

Alloy plenum, standard S2 exhaust manifold. The only 4-2-1 type you are allowed is the one that was fitted to the S160 and we don't have one, and as you say I am not sure it's actually worth it.

Should be a nice safe bet anyway and I can't wait to see the curve.

ECU turned up today btw.

that's still two weeks away (tomorrow). Glad to hear the ECU is here - means we can start to run the engine on the new ECU rather than mess about fitting one then the other.

Cheers,
Robin

Andy G · Post by **Andy G** » Tue May 01, 2007 8:10 am

roadboy wrote: ECU turned up today btw.

You legend!

How are we doing with the safety kit

Stu160 · Post by **Stu160** » Tue May 01, 2007 8:21 am

Andy

What discs are you using?

Stu