Search found 137 matches

by Hutch
Mon May 05, 2014 12:25 am
Forum: KA-T Picture Threads
Topic: MINI VAN WITH A DIFFERENCE (video Added)
Replies: 72
Views: 15593

Re: MINI VAN WITH A DIFFERENCE (video Added)

Yes there is an equalising pipe on the intake, I have reduced comp ratio to 7.5:1 and advanced the timing Throughout the Rev range. Now the engine is running so much smoother, zero det. Beginning to have a lot more faith in the build, I am loving that the torque is in nice and low. Van is currently ...
by Hutch
Wed Jan 29, 2014 11:47 pm
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

I'm hoping that lowering the CR will allow me to advance the timing back to where it is getting the most efficient burn.
by Hutch
Wed Jan 29, 2014 1:27 pm
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Now received my 7.5:1 ratio pistons, guess it's going to be a case of let's see what happens to the power after they are fitted and mapped. Any guesses on the results ?
Before: 422whp 483ftlb
After: ? Whp ? ftlb
Hutch
by Hutch
Wed Jan 29, 2014 1:16 pm
Forum: KA-T Picture Threads
Topic: MINI VAN WITH A DIFFERENCE (video Added)
Replies: 72
Views: 15593

Re: MINI VAN WITH A DIFFERENCE (video Added)

What would be my best option to convert to manual ? Not worried about the gear linkage, just the best direct fit and able to handle over 500ftlb
Cheers
by Hutch
Thu Jan 23, 2014 11:16 pm
Forum: KA-T Picture Threads
Topic: MINI VAN WITH A DIFFERENCE (video Added)
Replies: 72
Views: 15593

Re: MINI VAN WITH A DIFFERENCE (video Added)

Not much at all, maybe terano :-/
by Hutch
Wed Jan 22, 2014 9:42 am
Forum: KA-T Picture Threads
Topic: MINI VAN WITH A DIFFERENCE (video Added)
Replies: 72
Views: 15593

Re: MINI VAN WITH A DIFFERENCE (video Added)

S-chassis ? I live in the UK so there is no 240sx here, I am tempted to chop the bell housing and weld on to the Z31 tranny. Happy that the flywheels fit, I can obtain a high torque clutch easier being a 300zx clutch. Getting a Z31bolt pattern sent to me so I can put it up to my block for difference...
by Hutch
Tue Jan 21, 2014 5:58 am
Forum: KA-T Picture Threads
Topic: MINI VAN WITH A DIFFERENCE (video Added)
Replies: 72
Views: 15593

Re: MINI VAN WITH A DIFFERENCE (video Added)

I am still investigating a manual conversion, my Largo runs the same auto transmission as the 300zx (same code) will the equivalent manual transmission bolt straight on (Z31) ? Bell housing looks very similar to my Auto one. I realise that because of the way the largo transmission is mounted that I ...
by Hutch
Thu Nov 28, 2013 12:43 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Finding this all very hard to compute, I use this site above all others because I believe you have the best understanding of the Ka24de-t. I trust my tuner but I have my doubts about the map, I built a perfect engine. ....ok I did have a slight header leak after mapping but the motor was spot on. $1...
by Hutch
Tue Nov 26, 2013 11:21 pm
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Yes and no, some variables. The fuel in the UK is **** compared to the US, even though its 97/8 ron the octane is poor. Having to retard the ignition so much (as above) only goes to prove that det is a major problem, don't forget this is not the 240sx set up.The largo has a different head and coolin...
by Hutch
Tue Nov 26, 2013 1:09 pm
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

After 7.5:1 forged pistons, lots of discussion about this but you can't change physics. 1.5Bar boost requires lower compression pistons. My motor will det its ass off if I don't, you can all say I'm mad but it makes complete sense. If the standard ratio is 9.2:1then add 22psi you can't just retard t...
by Hutch
Sat Nov 23, 2013 5:26 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

I built everything myself, I sync'd the timing etc etc. I have ordered new parts and will start stripping the engine soon.
I'm going to try something new to try and reduce the Det.
Hutch
by Hutch
Sat Nov 23, 2013 12:32 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

The reason for retarding the timing that much is Det, there must be a reason why the import largo and the 240sx run different base timing ?
by Hutch
Thu Nov 21, 2013 11:50 pm
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Are you all in agreement, the map is poor ? I have to pay out for yet another strip down and rebuild. I have spoken to the tuner and he said it's not the map.
Having said that I wanted to just get in and drive my van, it's very disappointing that you all say the tune is at fault.
Hutch
by Hutch
Thu Nov 21, 2013 11:03 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Image
Full torque @3400
Hutch
by Hutch
Thu Nov 21, 2013 11:01 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

I am running a 30-76r garrett, also running 97 Ron with meth injection.
by Hutch
Thu Nov 21, 2013 10:49 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Small end bearing, must be where the knocking is.
by Hutch
Thu Nov 21, 2013 9:36 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

So far I'm going to get new rings, small ends just in case and a 1.5mm head gasket just to lower the compression slightly. I think it will need a tune again after but it will be ok to drive up to the garage on the original map ?
Hutch
by Hutch
Thu Nov 21, 2013 7:45 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

I already checked the bottom end and mains, no damage. Think the small ends are gone, will not know for sure until I drop the engine out again and strip the pistons out.
Hutch
by Hutch
Thu Nov 21, 2013 7:40 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Between 2500 and 2800 if I remember right but I only had it back from the mappers for 1 day before it blew the plugs and started knocking. When I inspected the big ends and mains the oil I removed smelled badly of fuel.
Hutch
by Hutch
Thu Nov 21, 2013 7:24 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Too much retard will have unburnt fuel stay in the cylinder which loses power, overheats, i.e. higher cylinder temps which melt electrodes as your tuner stated. Hence your plugs are fouled. Can you post a timing map of your tune? We generally reduce timing 1:1 for every psi. You can start from 25* ...
by Hutch
Thu Nov 21, 2013 7:20 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

First picture is a suggested ignition map, second is mine :-/
Hutch
by Hutch
Thu Nov 21, 2013 7:19 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Image
by Hutch
Thu Nov 21, 2013 7:14 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Image
Hutch
by Hutch
Thu Nov 21, 2013 7:11 am
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Just about to put up my timing map, hopefully it will make sense.
by Hutch
Wed Nov 20, 2013 11:12 pm
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

I did have bcpr7es ngk plugs fitted I might go back to them.
by Hutch
Wed Nov 20, 2013 11:05 pm
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Re: Piston Help

Im lost, I built a spot on engine and it lasted 1 day before the plugs melted to death. I now have to remove the engine and find out the extent of the damage caused. Mapper said that the extremely retarded ignition caused the extra heat and melted the iridium 8's ???
Hutch
by Hutch
Tue Nov 19, 2013 11:48 pm
Forum: KA-T Chat
Topic: Piston Help
Replies: 42
Views: 7708

Piston Help

I am looking for a company that can supply 89.5mm forged pistons with a 7.5:1 CR for the 24de engine. I know you are all wondering why so low, well basically the UK fuel is expensive and crap. To be able to run the correct timing @ 1.5 bar without det I need to lower the compression ratio right down...
by Hutch
Tue Nov 19, 2013 12:41 am
Forum: KA-T Chat
Topic: Thoughts
Replies: 10
Views: 7076

Re: Thoughts

Did a compression test and these are the results. 150/130/118/130 Gone down from 190 all cylinders. Being asked this by the person mapping the car....compression ratio which I'm guessing should be 9.0:1 with CP Pistons and he wants to know the cc volume of the head and piston @ TDC. Please excuse my...
by Hutch
Mon Nov 18, 2013 6:27 am
Forum: KA-T Chat
Topic: Thoughts
Replies: 10
Views: 7076

Re: Thoughts

Going to carry out a compression test later and see if there is any tell tail signs of damage. If not the the engine will have to come out yet again :-(
Hutch
by Hutch
Mon Nov 18, 2013 6:17 am
Forum: KA-T Chat
Topic: Thoughts
Replies: 10
Views: 7076

Re: Thoughts

I did have bcpr7es plugs in but my mapper removed them and fitted the irid 8's, engine has a knock now :-)
Stripped the bottom end down and both mains and big ends are perfect.
Hutch