just blew up my rebuilt engine!!

[nikp]

Any engine which has been repaired or modified by any person or firm other than RRR...

That\'s interesting: basically, says that they will replace a failed modified engine, as long as it has been modified by the company issuing the warrenty.

I would guess that the same applies in this country. Can any of the vendors confim this?

[Brett]

Also interesting that they insist on the rad being new or cleaned too, makes a lot of sense

[John Yorke]

Both my modified engines were covered only because all ancilaries were approved and set up correctly. As stated before if you are into DIY get approval from your tuner / engine builder.

[stuart wizy]

And I thought I was having problems with giving 10 year guarntee on all our block paved driveways!!!!!!!!!!!!!:rollin

trouble is theirs so many attributes that can cause a rotary engine to fail its scary:2Confused
running lean, to high intake, water leaks, over boosting, ignition probs etc etc etc....
tim rebuilt my last fd for my mate, he had it 2 week and turned the boost up to a bar on std ecu with std fuel setup, needless to say it popped  in 3rd gear racing an evo on motorway.
the engine was 2 weeks old!
I then bought the car of my mate, I took the engine out and sent it down to tims place on a pallet, and fair play to tim he rebuilt it again charging me for an apex seal and a bit of labour knowing full well that it over boosted.

Tim is fair in business in my eyes.

A certificate guarantee does need to be issued stating all clauses of cover signed by customer and vendor.

pip at wgt has u signing a disclaimer before your car goes anywhere nere the dyno to cover is ass incase of a pop,
sign on the dotted line for your guarantee after reading the small print and there will be know more of these silly disputes

[OLSKOOLROTAR]

Hayward rotary cover detonation in their warranties on all engines built, from stock rebuilds to full on race engines (including track day engines as long as they are fitted with recommended parts) obviously the price will vary depending on the engine that is built. My engine is modified and was warrantied. I cant speak for other vendors and am only stating from my experience dealing with Carl and crew.
The only exception/s in the warranties are no mods should be done either by the owner or another tuner without their knowledge that way the warranty would not become void.

I spent 6 months researching, speaking to various people before I decided who was going to build my engine.

I hope you can get to the bottom of this detonation problem and find out the cause, a very interesting thread none the less.

Jase

[iaint]

That\'s interesting: basically, says that they will replace a failed modified engine, as long as it has been modified by the company issuing the warrenty.

I would guess that the same applies in this country. Can any of the vendors confim this?

The warranty for my rebuild @ WGT was similar.  It was only modified in terms of porting but warranty still applied.  I would expect that for any road engine.

Drag and circuit specific builds would be a little different though I\'d suspect.

[GaryS]

you use Wi as a extra safety factor I do not know a tuner that maps to WI they just use it as a safety factor. BUT they make sure there is enough fuel there as far as they can so if the WI fails that the engine should last. I do highlight the as far as they CAN

Are we talking WI where a mist is sprayed on to the intercooler to keep it\'s temperatures down, or are we talking in to the intake or manifold.
If it\'s the latter then I\'d insist the car was tuned with it running else you\'ll risk running lean.
And before you flame me - WI in the latter example is used as an addition or alternative to inter/charge-cooling, helping reduce intake temperatures, making the air denser, and thus requiring more fuel.
I personally do not like WI because I came to the FD3 arena from the track day scene where it is a consumable that could run out while still on the track (resulting in an engine heading south), however there are obviously people around here who do and who do keep an eye on the fluid levels.

[MikeLMR]

The way I understand it .... water injection means that you can run less fuel i.e leaner. because it supresses the detonation so you can lean out the fuel and advance ignition etc. hence more power. It is very efective and lots of people all over the world run it as an aid to power rather than a safety net. Its not a new idea either its been done since WWII (e.g. increased power for short bursts on fighters etc. water/methanol injection)

This is the thread to read if you are interested ... very good info.

http://ausrotary.dntinternet.com/forums/viewtopic.php?t=38929

[John Yorke]

The way I understand it .... water injection means that you can run less fuel i.e leaner. because it supresses the detonation so you can lean out the fuel and advance ignition etc. hence more power. It is very efective and lots of people all over the world run it as an aid to power rather than a safety net. Its not a new idea either its been done since WWII (e.g. increased power for short bursts on fighters etc. water/methanol injection)

This is the thread to read if you are interested ... very good info.

http://ausrotary.dntinternet.com/forums/viewtopic.php?t=38929

Absolutely right Mike, but all the tuners I know they tend to use it as a safety net for those that wish to run + 1.0bar [ie leaving the engine on the rich side at wot]

[GaryS]

My view is it\'s the same as with any mod.  Anything that will affect the engine, be it gas flow, intake temperatures, octane of fuel, needs to be taken in to consideration when it comes to tuning.  This is especially so with engines as fragile as rotaries.

In the MX5 FI tuning world, people used to use water injection, or methanol injection for cooling intake temperatures (and with methanol increasing the RON), however this was as a result to engine bay considerations with intercollers and charge coolers.  As soon as the latter started to appear, WI started to be dropped.

I saw Bill\'s comments about all the way back to Stoich - I always thought that was \'rich\' not \'lean\'.  My point is that in reducing temperatures you are leaning out the mixture and that has to be taken in to account.  I also note in teh articale there is no mention made about whether any tuning has taken WI in to account.  I do remember from my supercharged MX5 days that the people who still used WI did tune their cars to take in to account the extra cooling, either through a decent ECU (Motec 400 and beyond I seem to remember) or through add on ACUs and controllers.

[MikeLMR]

stoichiometric is the chemically perfect ratio of fuel to air.

In it\'s simplest form if we take hydrogen which usually pairs up to form H2 you will need one "unit" (a Kmole usually) of H2 to every 1 oxygen to complete combustion and generate H2O as the only product. so thats all stoich is ... its a chemically perfect ratio.

Things like Carbon, carbon dioxide, nitrogen etc. make things a lot more complicated though that and about a million other variables

[oldone]

stoichiometric is the chemically perfect ratio of fuel to air.

In it\'s simplest form if we take hydrogen which usually pairs up to form H2 you will need one "unit" (a Kmole usually) of H2 to every 1 oxygen to complete combustion and generate H2O as the only product. so thats all stoich is ... its a chemically perfect ratio.

Things like Carbon, carbon dioxide, nitrogen etc. make things a lot more complicated though that and about a million other variables

Excuse Mike..I think you are wrong,could you please give me the chart counter variables as well,so I can see where you are coming from...the way I see it: H=dc4xrf56\\ron3~\\de27^fg
            =hi-co2>

:Typing

[BlitzBoy]

I think we should split the info of WI into another thread.
Personally I will be tuning for WI and not just using it as a safety measure, a risk i know but if I blow it give me the perfect excuse to have the porting made huge.

When tuning for WI there are great gains in HP to be had as you can lean out the mixture

[GaryS]

I was about to say the same - maybe separate off everything from your initial comment about water injection and/or my reply ?

[antnicuk]

I agree,  it should be seperated.

I think two very vaid points, there can tune for safety and not get such good performance, be safe if it runs out or you can rely on it and squeeze more horses.
In light of the original nature of this thread, if i was a tuner i would tune with it as a safety measure.  Thats why people who tune their own cars can generally get more power.   Mine runs quite rich because Max aires on the side of rich, i mean caution.  But i know its safe........