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Well, after almost 9 months waiting for parts and time at Ramspott & Brandt I am entering the last stage of my Sport 500 project, which I want to share with you.

End of last year Garry Kemp had delivered the modified 910 block with 2.6l displacement and the following specs :

- 97 mm bore

- 87.5 mm stroke

- closed deck design

- steel liners, hot honed

- steel crank shaft

- 650 grms conrods

- +2.5 cmm inlet valves

- + 3.5 mm exhaust valves, watercooled to lower the temp by ca 160

Edited by Fandango

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Just turned 2? Awesome work for a toddler

Can 'we' see the car in Wiesbaden/Giessen this weekend ??

Stefan, it wasn't meant -as for 'posing' power competitions ! those guys just understand more if you talking 'fuel talks' as your wife or neighbours... . So it is allways good to compare experien

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If it's one of Garry's creations I'm confident you'll achieve your target. I'm looking forward to hearing more as the install progresses :cheers:

88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

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Bibs,

It is one of Garry's creations and in fact he just emailed me to correct a few things in the specs of the engine which I just modified

Thanks for your confident note, I will make sure the forum gets a detailed report as the project proceeds. :cheers:

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I'm very interested to see that it appears there is a "block guard" on top of your cylinders. The only concern I have is the steel liners. I've heard both good and bad (and I concede that Garry is a phenomenal engine builder that I look up to) about the steel liners. The issue is the heat being produced at that kind of horsepower and the expansion and contraction of the steel liners vs. the block. This has been noted to cause the headgasket to blow in other builds... though I've also been told never to stroke the engine on the stock liners because they tend to wobble and blow the headgasket from that. I'm really excited to see how this turns out for you..

Modifying esprit's.. now that's fun..

PS... I AM NOT A CERTIFIED MECHANIC.. I Have chosen to help those in need, in the past and must not be construed as being a certified technician.

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Now that's what we're talking about...!!!

Keep up the good work, can't wait to hear your progress.

2009 World Singstar Champion

No I don't like the Europa, Evora or Exos.

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Great. Those rods look the goods.

When you get around to changing the turbo, using a separate wastegate might be worth considering for the improved flow benefits.

DanR

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I'm very interested to see that it appears there is a "block guard" on top of your cylinders. The only concern I have is the steel liners. I've heard both good and bad (and I concede that Garry is a phenomenal engine builder that I look up to) about the steel liners. The issue is the heat being produced at that kind of horsepower and the expansion and contraction of the steel liners vs. the block. This has been noted to cause the headgasket to blow in other builds... though I've also been told never to stroke the engine on the stock liners because they tend to wobble and blow the headgasket from that. I'm really excited to see how this turns out for you..

Mark,

Just to clear something up

Edited by Fandango

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Thanks A million for the info! I'm glad to understand what's been going on in this engine with so many rumours about. Anyhow, as for you're wastegate question.. the G-Car is externally wastegated... and the US Spec 1988 Stevens Esprit is too..

Modifying esprit's.. now that's fun..

PS... I AM NOT A CERTIFIED MECHANIC.. I Have chosen to help those in need, in the past and must not be construed as being a certified technician.

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Danny, Mark

I shared som emails with Garry on the external vs internal wastgate. This was his answer : ( which, by the way makes very good sense to me :yes )

Hi Stefan,

The displacement doesn

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Update 26.08.2008

Hi all

As you can see from the new pictures, progress is taking place step by step

Steffen Brandt is dismantling the old engine, keeping what I will need for the new one, such as header, Turbo, etc.

At the moment he is preparing the head by fitting the valves and the valve springs.

Once all is shifted, my old block will go back to Garry as this is part of the deal.

Cheers

Stefan

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That's a beautiful head! Thanks to garry for pointing this all out so well. Glad to see the progress coming along!

Modifying esprit's.. now that's fun..

PS... I AM NOT A CERTIFIED MECHANIC.. I Have chosen to help those in need, in the past and must not be construed as being a certified technician.

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This is gona be a serios engine..no question about that.

What gearbox mod are you gona use?

And a purpose build engine like that is gona be usable with 600bhp+ for track use.May be not for 24hour,,but who knows?When Lotus raced 24h LeMans the engine lased 9h and 16hour before headgasked failure do to heatsoak when in the pit.And your engineis tested to withstand 900bhp+.

I have maxed out my engine with a 3076 turbo with racefuel (1,65bar of boost and hige timing) on a stock crank,pistons,rods and crank.May be 450-500bhp, so you will be more than fine with 500bhp on your engine.

It looks like the biggest problem is the headgasked problem do the the stock liners.Witch is more than solved in your engine now.

Edited by rydning

89 Lotus Esprit Turbo S

Very fast road and trackday car.

GT3076R+ a lot of other modifications.

http://lotusespritwo...inZzdningz.html

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  • 2 weeks later...

not likely... the rpm the engine turns is somewhere in the 15000 rpm range... which effectively doubles its displacement to 5.3 litres.. and then 2.5psi makes sense.. it just overcomes the issue with cam duration and breathing ability at that rpm... makes the engine drivable at 3000rpm and still able to generate horsepower at 15000rpm without starving for air.

Modifying esprit's.. now that's fun..

PS... I AM NOT A CERTIFIED MECHANIC.. I Have chosen to help those in need, in the past and must not be construed as being a certified technician.

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Well, after almost 9 months waiting for parts and time at Ramspott & Brandt I am entering the last stage of my Sport 500 project, which I want to share with you.

End of last year Garry Kemp had delivered the modified 910 block with 2.6l displacement and the following specs :

- 97 mm bore

- 87.5 mm stroke

- closed deck design

- steel liners, hot honed

- steel crank shaft

- 650 grms conrods

- +2.5 cmm inlet valves

- + 3.5 mm exhaust valves, watercooled to lower the temp by ca 160

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Just read this again. That 2.65L 800hp Indy engine has to be more than 2.5psi I think??? Is it supposed to be 2.5 bar?

While I'd rarely question Garry on an engine point but 2.5 psi is not correct. Back when turbo Cosworths were used in CART the maximum boost pressure, regulated by the popoff valves on top of the plenum was 45 in. HG absolute, which translates to a little over 7 psi of boost.

With relatively low boost they were essentially "enhanced" N/A motors with relatively high compression and race cams.

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Hi!

Awesome build. What sort of budget do you have for this and where do you get all the parts? Might want to do something like this myself one day :innocent:

Do you plan to reuse the old Renault gearbox too?

Bjorn

Dream as if you'll live forever. Live as if you'll die today - James Dean

"If it isn't leaking, it's empty" - Comment from a British sportscar enthusiast after being made aware of an oil slick under his car

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  • 1 month later...

Sorry for being silent for so long, but there has been nothing to report.

As soon as the new rods come in from Garry Kemp we will be able to complete the engine.

From that point onwards I will be able to feed you lots of info.

Cheers

Stefan

Hi!

Awesome build. What sort of budget do you have for this and where do you get all the parts? Might want to do something like this myself one day :wub:

Do you plan to reuse the old Renault gearbox too?

Bjorn

HI Bj

Edited by Fandango

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Hi Stefan,

Thanks for the update. I'm going to start saving now

I don't think I've heard about the R & B 6 speed dog box. Do you have any more information or I URL I could try?

Bjorn

Dream as if you'll live forever. Live as if you'll die today - James Dean

"If it isn't leaking, it's empty" - Comment from a British sportscar enthusiast after being made aware of an oil slick under his car

Lotus Car Club Norway (LCCN) - lccn.no

LCCN on Facebook - http://www.facebook.com/#!/groups/LotusCarClubNorway/

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Finally, we are back on deck.

Rods came in today and as you can see they look the works. They are 1 kg lighter than the factory ones !!

In another thread, I think it was Artie's engine rebuild, there was some talk about iron liners.

Well, here you can see some. :)

I shall keep you posted hopefully every second day with new piccies as R & B assemble the rest of the engine.

Bear with us :whistle:

Stefan

Bj

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Edited by Fandango

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Very nice, the rods and pistons look just like mine. Are the rods Saenz rods from JAE in the US? Also, are the pistons JE's?

Artie

89 White Esprit SE

...a few little upgrades....

93 RX7.....Silverstone

....slightly modded...Muahaha...

New Addition:

1990 300ZX TT......Hmmm

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