“Merlin F85” heads for the Rover V8 from Real Steel

[Else]

phazed said:

Mine was an H404, the power was slightly more.

That graph is the solid 404 which is fitted now, it reduced power slightly but increased torque!

I dont know much about cams but i thought going to solid lifters allowed a better top end but yours was reduced?? Confused??

Else

[phazed]

Else said:

phazed said:

Mine was an H404, the power was slightly more.

That graph is the solid 404 which is fitted now, it reduced power slightly but increased torque!

I dont know much about cams but i thought going to solid lifters allowed a better top end but yours was reduced?? Confused??

Else

Very confused and not at all what I wanted!

One day I might advance the cam by 4 degrees which should move everything up.

BTW, Rob was confused also.

[Else]

phazed said:

Very confused and not at all what I wanted!

One day I might advance the cam by 4 degrees which should move everything up.

BTW, Rob was confused also.

Mmm, PITA, lot of work, will that increase the numbers or just move them up the rev range?

[phazed]

Else said:

Mmm, PITA, lot of work, will that increase the numbers or just move them up the rev range?

Don't know.

As you say, a lot of work for an unknown.

As is I bettered my time on the drag strip by nearly 2/10s of a second.

Car also feels mega fast on the road as the midrange is so awesome, (hate that word but it is!).

[MPoxon]

Nice graph there Andrew, what is the spec of the engine?

[Else]

Have a look back in this thread, but basically it is a V8D 5.2 with bespoke heads developed by Rob and David Vizard combined with a bespoke inlet manifold and decat exhaust manifolds and Y piece all controlled by a Motec Ecu running coil packs and semi sequential injection.

[MPoxon]

Blimey 2007 this thread started, glad you finally got there. Looks like a good result as well.

[Else]

Have a look back in this thread, but basically it is a V8D 5.2 with bespoke heads developed by Rob and David Vizard combined with a bespoke inlet manifold and decat exhaust manifolds and Y piece all controlled by a Motec Ecu running coil packs and semi sequential injection.

[Kokkolanpoika]

What is your compression ratio?

In my mind your power is on the low side.. My 5.2l give +20hp more and lot of smaller valve´s..

Is your valve´s really 50/42mm?

[Else]

Hi Timo, I don't know but i can find out. I'll ask the guy that built it and post it on here as soon as i get an answer. Would be interesting to know anyway.

I think i have a fairly mild cam by the way, currently waiting to find out what it is also.

Else

[Else]

Yes valves sizes are as posted

[ivanhoew]

Else ,

have you ever measured the inlet vacuum at each cylinder on the dyno ? i wonder whether the plenum diameter is restricting the rear cylinders . a barb on each runner conected to a well damped gauge might show if this is happening at high rpm.

just a thought,might be nonsense.

regards
robert.

[spitfire4v8]

^^ I think that's a very good idea .. I'm not a fan of the twin plenum that's being used (although it is beautifully made), but I think the design was suggested by a well respected v8 engine tuner. The more usual design for a plenum that feeds all 4 cylinders more evenly would be to have a reducing volume from front to rear, and a large total volume to slow the air down for pressure recovery to happen. I can't see that happening in the OP's plenum, but I'll keep an open mind as I haven't done any specific testing on that, it's just what's posted around on the web about plenum designs.

[ivanhoew]

yup spitfire , i like em big ..






robert.

[Boosted LS1]

^ So do I. With chargecoolers. :-)

[ivanhoew]

nice!


i went intercooler on mine..

[Boosted LS1]

Where's your engine fella, I can see a varta battery. :-)

[ivanhoew]

Boosted LS1 said:

Where's your engine fella, I can see a varta battery. :-)

i know! its only a dinky 3.5,,, hardly pull the S off a R P.

[rev-erend]

A lithium battery would look nice in there. You would be able to see the engine then.

[ivanhoew]

rev-erend said:

A lithium battery would look nice in there. You would be able to see the engine then.

orrr , get a slighlty bigger one ,and apply for hybrid status?