just blew up my rebuilt engine!!

[rx7veilside]

i think if there was a problem with alarms then there wld be every single engine going pop as all ins co will require a cat 1 alarm on any perf car so i wld say every rx7 in this country has a alarm on it..clifford is at the higher end of the market as regards quality along with toad..are we really saying that every rotary is now in danger of going pop..i have never heard of any engine going pop because of a alarm and there must be thousands of rx7s especially in the states with alarms on them.i am not an expert but have used clifford alarms for about 5 cars now and the only probs i have had are the sensors can be over sensitive.i simply cannot blve a engine went pop due to the alarm and especially as the car according to his post was showing all normal parameters for intake/water etc and unless i am wrong was off boost at tine of failure.my own engine is awaiting stripdown after only 1500 miles due only showing 6.5bar and 4.5bar compression since a rebuild and i will be interested to see the cause of this as well
i have now entrusted hayward rotary to rebuild it and map it properley

[A7NTY]

It seems to me two things are missing here:

(1) A statement from the tuner responsible for stating the alarm could have caused engine failure - explaining his reasoning.

Or you could just threaten the forum owner with legal action to cover up your mistakes and make sure your reputation stays squeaky clean to most. :2Rolleyes :2Rolleyes :2Rolleyes

[rx7veilside]

ant seems like u know something about whats going on..maybe richard cash could come back on and enlighten us all...problem is it is hard to substantiate sub standard workmanship and all too easy to blame mitigating factors and i suspect certain things are done behind closed doors to prevent the full story/stories being published
i recently had a tel conversation with another unhappy rebuilt engine person who has had to have his engine stripped after a suspect rebuild

[A7NTY]

ant seems like u know something about whats going on..maybe richard cash could come back on and enlighten us all...problem is it is hard to substantiate sub standard workmanship and all too easy to blame mitigating factors and i suspect certain things are done behind closed doors to prevent the full story/stories being published
i recently had a tel conversation with another unhappy rebuilt engine person who has had to have his engine stripped after a suspect rebuild

I was not referring to anyone involved in this incident. I 100% agree that the alarm could very well have caused this problem - I have heard of them causing many far worse problems than this in my time. I give RX motors and RE:Worx my full support I know the guys at those establishments they are all very honourable and decent people and I regard them as friends more than just people I have dealt with in the past. Other tuners I cant comment on as I havent dealt with them. I can promise you, if you pay RX Motors to do the job properly and dont skimp then they will do it and they will honour their warranty.

[rx7veilside]

cant comment on rx motors as they have never done any work on my car..i still dont blve any alarm unless were talking 100.00 budget special could cause an engine to pop and i challenge anyone to come forward and show me a car whose engine has popped due to this..do the maths about all the rx7s worlwide aus/us/uk etc and has anyone ever posted oh dear my engine blew up because of my alarm..come to think of it has any car in the world blew up due to the alarm

[BlitzBoy]

I know from past experiance with different cars if an alarm is "incorrectly" fitted eg cut into the fuel pump wiring system with inadequate parts or care it will cause a voltage drop to the pump hence less fuel delivered to the engine and therefore will create a lean condition and possiable detonation.

In this case a possiablitly of being wired into the coil ignition system and causing a miss fire. So I thinks its all down to the installer and the parts used in the alarm. 9 times out of 10 an alarm will be fine, but the risk is there I think

[A7NTY]

cant comment on rx motors as they have never done any work on my car..i still dont blve any alarm unless were talking 100.00 budget special could cause an engine to pop and i challenge anyone to come forward and show me a car whose engine has popped due to this..do the maths about all the rx7s worlwide aus/us/uk etc and has anyone ever posted oh dear my engine blew up because of my alarm..come to think of it has any car in the world blew up due to the alarm

As Blitzboy says its the installers, and believe me some of them are bodge specialists.

[rx7veilside]

valid point but if this is so common why wasnt it picked up on richards engine when it was mapped if there was ignition break up then its not acceptable that this wasnt highlighted as how is the layman meant to know he has ignition break up..my own car has a clifford and has had 20 plus dyno runs and no mention of ignition break up.and if its wired to the fuel pump this should also be noticed during a mapping session if the pump has voltage drop
i can only say i have never ever heard of any car going pop due to the alarm

[A7NTY]

valid point but if this is so common why wasnt it picked up on richards engine when it was mapped if there was ignition break up then its not acceptable that this wasnt highlighted as how is the layman meant to know he has ignition break up..my own car has a clifford and has had 20 plus dyno runs and no mention of ignition break up.and if its wired to the fuel pump this should also be noticed during a mapping session if the pump has voltage drop
i can only say i have never ever heard of any car going pop due to the alarm

Well I can tell you if you try to run more boost then thats where you start to get the ignition probs, the spark starts getting blown out.

[DRAGON]

Of course it was.

Goodbye MRC!

Shame to have lost Max because of things on here. He has helped out many of the people on the forum over the years.

[rx7veilside]

ross u know a thing or 2 ever heard of any car popping because of a alarm and i mean any car
i think richard was running .96 but mapped for more
.96 is not by any means excessive as standard car will pull .9 with very few mods and he had plenty of fuel it wld seem

[88GT-R]

Well I can tell you if you try to run more boost then thats where you start to get the ignition probs, the spark starts getting blown out.

Not having a dig, Ant, but would like to use your comment as an example. Engine detonation is not, and cannot be caused by a weak spark, poor flame front or a flame blowout. This is a misconception. Poor ignition control, mapping error, incorrect plugs and bad fuel are the crappy culprits.

Would like to ask this of the guys who map for a living. How many people who map new customer\'s cars actually know what the static timing of each car they map is set at, and more importantly do they check this before commencing the remap. This is one of many checks i do before mapping any of the cars i touch.

Would also like to touch on another case. Whilst still in Germany, a friend\'s engine popped after the run in period. On strip down we found that the oil injector on the front housing was not securred properly, and had wound out. This caused sudden leaning, and detonation. The builder had a bruised ego.

Mistakes happen, but it is whats done about them that matters.
Cheers,

John

[A7NTY]

Mistakes happen, but it is whats done about them that matters.
Cheers,

John

I agree with that one!

[iaint]

Several times I\'ve had cars that run fine on the dyno up to a certain rev / load point, and then the ignition suddenly starts missing.

Shove a direct 12v feed to the ignition from the battery and the miss goes.

Alarms are a very real problem on many FD\'s I\'ve tuned.

This is a completely clear statement from Max.  He\'s seen it a number of times where the fedd to the coils causes a problem.  It could be the alarm, it could be general ageing of the loom.  

I\'d beinterested to know if the people who are calling Max a liar have evidence to back that up?  Has he actually never seen this problem on the dyno or are you actually wrong but not prepared to admit it?

[A7NTY]

This is a completely clear statement from Max.  He\'s seen it a number of times where the fedd to the coils causes a problem.  It could be the alarm, it could be general ageing of the loom.  

I\'d beinterested to know if the people who are calling Max a liar have evidence to back that up?  Has he actually never seen this problem on the dyno or are you actually wrong but not prepared to admit it?

Absolutely Iain. Why would he make it up? Some of you guys seem to think the whole world is out to get you..... ...your paranoid.