high comp pistons

Post by **LiU** » Sun Mar 30, 2003 3:49 pm

hey I was wondering if buying these would be a good idea or jsut a waste of $$.... I've never heard of this brand soo is this for real?

http://cgi.ebay.com/ebaymotors...33623

if the link doesn't work here's the copy pasted thing:HOW WOULD YOU LIKE OVER 200HP ON PUMP GAS, WITH JUST ONE MOD? THESE PISTONS ARE BRAND NEW!!!

Possible? With the KA? YES! Here is the deal. I am selling a set of cast high compression pistons made by Beck-Arnely. These pistons will set you up for the 'PERFECT ALL MOTOR NISSAN'. The Ratio is 11.6:1, and they are set to fit any standard bore Nissan KA24DE. They include a set of stock rings, wrist pins, and clips. If you would like Total Seal rings, just email me when you win, I offer them at my cost to the winner.

"The Integra Type R Runs a compression ratio in the 11s and makes almost 200Hp on 1.8L of engine, with pump gas", Why can't you do it with 2.4L? These will work to make you more power by themselves, but would be best accompanied with more modifications. This is not necessary, however.

For Every 1pt of Increase, you will average a 10%HP increaseOn a 'STOCK BLOCK' KA, you will see a 32HP increase at the crankshaft.

32HP or MORE!!!

Post by **JJ240** » Sun Mar 30, 2003 3:49 pm

We had a discussion about this guy in another post. Its bullsh1t. Cast pistons that make 11.6:1 in a KADE are just plain old KA24E 8.6:1 pistons. Its a ripoff because you can buy them brand new for around 40 bucks. notice how they are always private auctions. Its so noone can email the bidders and tell them they are getting screwed.

Post by **RedShred** » Sun Mar 30, 2003 3:49 pm

I just gave a set of my old E pistons to a DOHC K owner so he could build a Hi Compression engine...

'Tis a shame when folks dont do their research...

Post by **JJ240** » Sun Mar 30, 2003 3:49 pm

Well common sense AND research is waht is needed here...the con is trying to pass them off as something more than what they are. although not lying he is sure making it sound sweet. happen to have another set of E pistons lying around? :-)

Post by **Projekt** » Sun Mar 30, 2003 3:49 pm

how do the sohc pistons create a higher compression? isn't the sohc engine a closed chamber?(non hemi)

Post by **LiU** » Sun Mar 30, 2003 3:49 pm

RedShred wrote:I just gave a set of my old E pistons to a DOHC K owner so he could build a Hi Compression engine...

'Tis a shame when folks dont do their research...

.... did the dohc owner whom you gave your sohc pistons to notice a difference?

Post by **I am Technoman** » Sun Mar 30, 2003 3:49 pm

DE pistons are dished like turbo pistons. E pistons are flat. It's the difference in the heads that makes the higher compression. You will get noticeable results from the flat top pistons with a DE head. E pistons are nice they have a thick ring landing making them a very good piston just not for turbo.

Post by **C-Kwik** » Sun Mar 30, 2003 3:49 pm

LiU wrote:
"The Integra Type R Runs a compression ratio in the 11s and makes almost 200Hp on 1.8L of engine, with pump gas", Why can't you do it with 2.4L? These will work to make you more power by themselves, but would be best accompanied with more modifications. This is not necessary, however.

The VTEC motors make power by revving high. High compression certainly helps, but it's mostly the 8000-9000 RPM redlines do the trick. The VTEC just allows you to run a much better cam profile for top-end breating, which allows for a fairly decent amount of high end torque.

Post by **I am Technoman** » Sun Mar 30, 2003 3:49 pm

The IT-R has 10.6.01 and they really come alive after 7,500. My friend has a stock one that can hang with me Almost!:D I will start modding that car soon and It will probably eat my car on the trak...

Post by **Projekt** » Sun Mar 30, 2003 3:49 pm

have your cars turn and you might gain an advantage...

so the DE head is more closed than the E head? does anyone have comparison pics?

Post by **JJ240** » Sun Mar 30, 2003 3:49 pm

I dont know...it would be interesting to see equal HP 240sx and IT-R go at it on a course...the IT-R is the best factory handling FWD car ever produced.

Post by **I am Technoman** » Sun Mar 30, 2003 3:49 pm

I race my friend all the time in his IT-R. What a fun car car to drive!

Post by **JJ240** » Sun Mar 30, 2003 3:49 pm

How do you think the IT-R would compare to you in an autocross situation? and how similar are you HP ratings

Post by **Projekt** » Sun Mar 30, 2003 3:49 pm

the itr can stay in power, but it still sufferes from the same FWD issues that they all do. it does have quick turn in, but a properly built 240 can too.

still want combustion chamber pics.

Post by **JJ240** » Sun Mar 30, 2003 3:49 pm

you want ka24de combustion chamber pics?

Post by **RedShred** » Sun Mar 30, 2003 3:49 pm

no extra pistons lying around, sorry.

My understanding is that the wristpins on the E pistons are lower by only alittle, pushing the piston further into the squeeze area.The 8.6:1 pistons are also dished.

The guy whom i've traded has not used them yet... so I dont know how well this works. I was just looking for a spare valve cover to polish so I traded... hehe.

Post by **RedShred** » Sun Mar 30, 2003 3:49 pm

This is a pic of my head. This cylinder had a forged piston come apart and beat it up alittle but you can still get the idea of the shape of an E chamber.

Post by **JJ240** » Sun Mar 30, 2003 3:49 pm

Ill try to get some decent DE pics tomorrow but it will be tough because I dont want all the valve **** dropping out of the top of the head

I dont want to even touch it before I put the head back on

Post by **Projekt** » Sun Mar 30, 2003 3:49 pm

wuss :0)

Post by **JJ240** » Sun Mar 30, 2003 3:49 pm

Gotta know your limits

Post by **Projekt** » Sun Mar 30, 2003 3:49 pm

is it the green looking slime stuff?

Post by **Projekt** » Sun Mar 30, 2003 3:49 pm

so do i get a DE head picture?

Post by **JJ240** » Sun Mar 30, 2003 3:49 pm

Still working on it, the head is in one place and the camera is in another

Post by **king240** » Sun Mar 30, 2003 3:49 pm

Putting a flat top piston in our dohc engines is a sure fire way to bend all your valves, they need reliefs cut into the dome for clearance, I can't see this being a "bolt on".

Post by **JJ240** » Sun Mar 30, 2003 3:49 pm

the pistons in my 93 KA24DE had very shallow dishes. No cuts for valve clearance. I dont see how that shallow of a dish could make room for the valves. Im pretty sure as long as the piston itself wasnt taller a flat top wouldnt be enough to smash your valves

Post by **Projekt** » Sun Mar 30, 2003 3:49 pm

king240 wrote:Putting a flat top piston in our dohc engines is a sure fire way to bend all your valves, they need reliefs cut into the dome for clearance, I can't see this being a "bolt on".

that's only true on a belted engine. all mazdas have corresponding valve reliefs. same with hondas. if you have a timing chain instead of a belt it's not a problem. the reliefs are for insurence against a broken belt.

Post by **Scott McLellan** » Sun Mar 30, 2003 3:49 pm

reliefs are also for higher lift cams that push the valves in farther. maybe that's why honda's have them because their vtec system can tame a bigger cam?

Post by **Projekt** » Sun Mar 30, 2003 3:49 pm

not really. cause my 7.8mm lift 323 had valve reliefs. it's for when you spin a belt. granted if you had a belt engine, and then increased the lift een more, i'd have my pistons machined if i were you.

Post by **robertwb70** » Sun Mar 30, 2003 3:49 pm

i have some pics of various nissan stuff-KA-24DE+SOHCtoo big to attach-cant figure out how to shrink them so e-mail if interested

Post by **Projekt** » Sun Mar 30, 2003 3:49 pm

please mail me the pics of the combustion chamber por favor

high comp pistons

high comp pistons

Re: high comp pistons

KA-24DE pic

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