What Engine for 500BHP

What Engine for 500BHP

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Discussion

turbonutter

Original Poster:

496 posts

209 months

Friday 23rd August 2013
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OlberJ said:
Sticky tyres is what you need. And a very grippy surface.

https://www.youtube.com/watch?v=ej5Y4bRmtXg&fe...
That was Impressive biggrin

Liquid Knight

15,754 posts

184 months

Saturday 24th August 2013
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Half way down before he dabbed the brake. Comparing the weight and length of a MR2 with your Stratos would probably result in a flip unless you fit a BMW-esque anti-wheelie sensor.

http://www.ebay.co.uk/itm/Clinometer-Inclinometer-...

An inclinometer rigged up to a rev' limiter of kill switch maybe.

turbonutter

Original Poster:

496 posts

209 months

Thursday 29th August 2013
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On track again at Blyton on Saturday (31st) hopefully no problem with the driveshafts, as no hard starts!

turbonutter

Original Poster:

496 posts

209 months

Sunday 1st September 2013
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turbonutter said:
On track again at Blyton on Saturday (31st) hopefully no problem with the driveshafts, as no hard starts!
Drive shafts were fine..... but managed to blow the head gasketfrown My fault, heard a couple on knocks on the up change, assumed it to be the drivetrain, but by the time my head worked out that it was detonation, it was too latefrown

stevesingo

4,858 posts

223 months

Sunday 1st September 2013
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Jesus fking Christ. You need to throw some chicken bones at the thing as you need some kind of voodoo luck.

turbonutter

Original Poster:

496 posts

209 months

Sunday 1st September 2013
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I am sure somewhere some one has a voodoo model of my car and just keeps sticking it with nails!

If anyone has a bucket of good luck, please send it my way.....

Just took the plugs out and it looks like both heads have blown gaskets. It dosent really matter if its one or both, its the same rebuild - hopefully the heads are ok and nothing else is damaged.
The engine didnt overheat and having the electric pumps meant it had a good cool down, so they shouldnt be warped & havent been skimmed so should be re-usable..

I used spesso race gaskets this time, but they are out of stock - anyone have any experience using ferriday for gaskets http://www.ferriday.co.uk/copper/copper.shtml

Liquid Knight

15,754 posts

184 months

Sunday 1st September 2013
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Yes! I can finally contribute constructively. woohoo

I used a Ferriday head gasket on my supercharged Mini 1380. It worked but I wasn't running anywhere near enough boost to test it (the long term plan was to swap the Eaton for a turbo at some point but someone offered me silly money for the car not long after I was made unemployed).

stevieturbo

17,269 posts

248 months

Sunday 1st September 2013
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turbonutter said:
I am sure somewhere some one has a voodoo model of my car and just keeps sticking it with nails!

If anyone has a bucket of good luck, please send it my way.....

Just took the plugs out and it looks like both heads have blown gaskets. It dosent really matter if its one or both, its the same rebuild - hopefully the heads are ok and nothing else is damaged.
The engine didnt overheat and having the electric pumps meant it had a good cool down, so they shouldnt be warped & havent been skimmed so should be re-usable..

I used spesso race gaskets this time, but they are out of stock - anyone have any experience using ferriday for gaskets http://www.ferriday.co.uk/copper/copper.shtml
Are the Spesso's metal shim gaskets ? What sort of studs etc ?
It would seem very unusual to blow both head gaskets at the same time

The Ferriday's might do fine, but pretty sure they dont recommend them for a road car. Copper is less than ideal from a longevity point of view, and copper requires heat cycled and re-torqued which could be a pain.

Providing block/liner integrity is good, decent studs and good quality MLS gaskets. They should easily hold a lot of boost.

But if you did actually hear detonation, and that is the cause, it can blow anything up. You need to find out why it happened and ensure it does not happen again.

anonymous-user

55 months

Sunday 1st September 2013
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If was excessive knocking pressure that has killed the HG's, then no kind of HG is really going to prevent it occuring again! You need to remove the det first. However, it is possible it was detonating due to the coolant leaking into the cylinders if the HG's had failed first. Needs a good strip and inspection of components to understand the failure story.

turbonutter

Original Poster:

496 posts

209 months

Sunday 1st September 2013
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I realise that no head gasket will hold detonation, I was just asking re an alternative supply possibility. The Spesso Gaskets I used are their standard racing gaskets, which are really just a better quality standard gasket, designed for NA engines. They dont do their double core gaskets for my engine, but they were the best off the shelf gaskets I could find.. but they dont have any at present...



Engine is using the stock head studs as they are more or less impossible to remove without damaging the block!

Going to try to get the heads off this week, to see what I can see, but as always I am back to work soon, so not a lot of time & definately no time for a rebuild until?????

As always the biggest problem is why did it happen - fixing things is easy if you know what you have to fix.



turbonutter

Original Poster:

496 posts

209 months

Sunday 1st September 2013
quotequote all
Max_Torque said:
However, it is possible it was detonating due to the coolant leaking into the cylinders if the HG's had failed first. Needs a good strip and inspection of components to understand the failure story.
That is something that I had not considered, but I guess its hard to see if the gasket leaked first once its been destroyed by the detonation...



ivanhoew

978 posts

242 months

Sunday 1st September 2013
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did the the engineer dynoing it give you any idea of how close you were to detonation and what sort of safety margin he built in with the igniton advance ?

stevieturbo

17,269 posts

248 months

Monday 2nd September 2013
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Does Cometic etc make anything ?

If not, I'm sure they could do you a custom set, or there are other places who will do custom gaskets. Might not be cheap though

anonymous-user

55 months

Monday 2nd September 2013
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Also worth remembering that ignition angle has a huge influence on Pmax!

Evoluzione

10,345 posts

244 months

Monday 2nd September 2013
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+1 for trying Cometic, I stopped using Spesso after failures - one leaked water before the engine had even been started and the dealer wasn't interested in the slightest. I use nothing but Cometic MLS now on performance stuff and never had an issue.

You will need to consider stronger studs (unless you already have them?) I've got the details of a manufacturer of studs and MLS gaskets (somewhere), if you need some leads drop me a PM and I'll hunt them out.

anonymous-user

55 months

Monday 2nd September 2013
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Custom studs here:

http://www.tkprecision.com/

(suprisingly affordable)

Liquid Knight

15,754 posts

184 months

Monday 2nd September 2013
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Max_Torque said:
Custom studs here:

http://www.tkprecision.com/

(suprisingly affordable)


Sorry wrong kind of custom stud work. getmecoat

andygtt

8,345 posts

265 months

Monday 2nd September 2013
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After a couple of expensive undiagnsed engine failures I went to an ECU (motec M800) that gives me full logging... must say its a fantastic and interesting data that it gives and presents it in a way you can really use.

yes its £5k all in, but my engine failures were both more than that AND its already identified why one of my previous engine failures happened which is allowing me to put in place upgrades to prevent it smile


stevieturbo

17,269 posts

248 months

Monday 2nd September 2013
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His Haltech does log, but nowhere near the onboard abilities of a Motec of Syvecs.

Not sure if the Haltech offers knock monitoring or control yet either ?

Value for money, A Syvecs S6 would be his best option. Although as the Haltech is a new install...would be a biggish expense to change.

If mapped correctly, detonation should never have occurred in the first place, if that is indeed what caused the failure.

neiljohnson

11,298 posts

208 months

Monday 2nd September 2013
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stevieturbo said:
His Haltech does log, but nowhere near the onboard abilities of a Motec of Syvecs.

Not sure if the Haltech offers knock monitoring or control yet either ?

Value for money, A Syvecs S6 would be his best option. Although as the Haltech is a new install...would be a biggish expense to change.

If mapped correctly, detonation should never have occurred in the first place, if that is indeed what caused the failure.
I know of a focus Rs that runs haltech with knock control I'm not sure if its a standard feature though