It has been a while since I have been on the forum, one of the main reasons being I haven't had a Lexus for the past 4 months. As many of you know I had the stage 1 pulley put on my TTE supercharger which led to catastrophic failure. It has been a long hard journey but I finaly have my lexus back up and running. I had the engine rebuilt by Thor racing with a brand new bottom end. Conrods were sourced from a supra GA70 twin turbo, pistons are the JE ones available through TDI. Mapping was done by Weston performance who have done a fantastic job. I have lost quite a bit of power approx 50 BHP but the engine can now handle oodles of boost so the next step will be a more powerfull supercharger, more than likely a rotrex but I might opt for a vortech. Anyway thought you guys may be interested in some of the pictures below!

All in all there were 4 holes in the block! Weston Performance sorted out the rough idle I was left with after the stage 1 upgrade, and I now have an extremely smooth power curve, will post up the dyno graphs from TDI and from Weston so you can see the difference.

very similar damage to what happened to my old IS

The compression of the engine is now lower hence the loss in power.

What caused yours to blow?

Oh dear, that was a catastrophic failure and then some!!....... Still she lives another day that's the main thing.

Hi Cho nice to meet you today at WIM (black IS) glad you finally got it up and running, as said she lives and breathes again.

according to Lexus it was over fuelling ??????

I feel bad for you, you said it wasnt running right when I met you at WIM last year.
Good to hear your up and running again and all the best for this time round.

Good to hear the car is running again.
Looking at those pics.... ouch
Boosting mine to .75 with bigger IC and pulley would have ended in a similar disaster...
I did change back to stock pulley shortly after having fitted the bigger one... risk of having such a catastrophe is too high for me...

Could you make a compression-diagram to see how high compression with those conrods is?

Nice to see it up a running again Cho

glad its all sorted mate. those pics tell a sad, but ultimately resolved, story.

what power is she putting out now matey??

Glad to see it back mate, glad you got it all sorted and successfully.

Stav

Oh and Tony thanks for sorting out the car the other day, she is far more responsive now and no pulling what so ever. Might come back and get some arb's put in soon!

Running at about 198 BHP!

The compression ratio is now 9:1 previously 10:1, currently at 0.5 bar of boost

Welcome back Cho.

198 is alright matey. is that with the pulley upgrade etc or just the standard s/c setup??

Thats with the pulley Rob

Stav

sorry not to sure what mods cho has made i'm afraid. i presume there are some other mods to the engine??

I'm not running the standard setup at all, 550cc injectors, stage 1 pulley, camcon and f-con v pro decat manifold bigger intercooler and im getting the same power you would expect from the standard tte setup! If anyone wants to buy a tte supercharger with cradle, intercooler and pulley please pm me as I am looking to get rid, I have only done about 3k miles on it. Pipework not included

may sell the whole kit including pipes for the right price. Above also includes the ecu and airbox

Cho.........something doesnt add up right.

Firstly I had the JE pistons from Tdi and at 9.5.1 was told would work OK with TTE s/c which from what I've been told by other people is OK.

What comp ratio were yours ?

secondly are weston HKS power writers ?

thirdly what dyno do they use ?

fourthly What % loss did they factor in (should be 18% ish if they did less would explain diff)

fifthly what diameter is your bigger pulley ?

sixthly waht boost are you making ?

For what its worth I'd not get it looked at by abbey motorsport as you should be getting atb least 240bhp at the fly from this set up

If you want more then go turbo or by something else...............

just what i can help with.

Im not sure what comp ratio the pistons were, weston are HKS power writers and they used a dyno dynamics rolling road the boost is runing at 0.5 bar not sure about the other things will have to check. I thought the loss of power was downto the lower compression pistons, the guys at thor said the compression ration was 9.1.1 but need to check, does that sound totally wrong?

sounds right to me.

so really the only thing that has happened is diff pistons and map ?

what is the bhp/torque now ?

Those pics look alot like mine did, which also had 4 holes in the block Glad you're back on the road now though mate.

Checked with Thor and the compression is currently 170 psi

That's very encouraging to see the car back together again Charnjit

The power does seem to be extraordinarilly low so it may be worth considering getting a professisonal opinion or review.

As the only communication we have had recently was a request regarding our stage 2 pulley kit, I would like to put closure to the outstanding issue of the blame for the failure of your engine.

As I did clearly state that we would pay if it was found that we were to blame, please let me know if you or your contractors found any fault with our work that caused the engine failure.

Thanks and best regards

As I did clearly state that we would pay if it was found that we were to blame, please let me know if you or your contractors found any fault with our work that caused the engine failure.


Did you give Cho all the relevant information he asked you for, so cho's contractors could work out the fault or faults

Glad things seem to be working out now



Sorry if this is off topic...... Are TDI back as a trader again? Not had anything posted from yourselves for ages so got me wondering..... how come it still says Authorised Trader under the Avatar yet other (former) traders have had bit that removed

I have not have an engineers report carried out due to the mounting costs and my priority was to get my car running. There still remain problems with my fuel gauge, engine management light, traction control light still flashing, car still does not start properly from cold. All these problems were present after the stage 1 conversion and none before.

sounds like a high quality install then ! Dont know about you but i would be making lots of noise to get the fault lights,guage and starting problem fixed FOC - it worked before it went into TDI so i expect it to work when it comes out - simple as!!!!!

not really as it will be caused by lexus component failure

or toyota !
my fuel guage doesnt work and the engine management light is on
obviously it must be the HKS equipment