New 3.5 litre engine?

[designdoctor]

New 3.5 liter engine

To all NSX experts,
Just wondering if the current 3.2 litre engine can be bored out to a 3.5. If so, I am definitely in the market in buying a new one as a collectors' item.

Thanks,

DD

 

[NA1 #2853]

I've bored out 1800 integra engines to 2025cc with just BORING only..... although they required Darton sleeves (or equivilant) to do so. I took the 81mm bore all the way out to 85mm.

I dont see why someone couldnt sleeve a C30, or C32 and then open it up a little bit. If after sleeving with a Darton T-Sleeve, you could go up to about 95mm bore you will be able to get about 3317cc
or a 3.3L. I really doubt that anything over 95mm will be possible even with those monster sleeves.

Make sure you get some good pistons make that are light, have beefy wristpins, and it couldnt hurt to raise the comp a little bit. The factory rods should be cool.

The only thing else you could do, would be get ahold of a crank with a little more stroke to get the 3.5L

 

[Jimbo]

I don't think there's enough room. When Honda came out with the 3.2 they had to use a special fiber-reinforced casting method in order to live with very thin walls.

-Jim

 

[NA1 #2853]

I don't think there's enough room. When Honda came out with the 3.2 they had to use a special fiber-reinforced casting method in order to live with very thin walls.

-Jim

Yeah, but i'm talking about resleeving with T-Sleeves, that actually replace the sleeve, and the upper portion of the aluminum surrounding the factory sleeve, it also fills in the water jacket at the very top to create a solid deck.

Didnt NOSNSX do something like that before??? and then sell it off?

 

[CRX B16B VTEC]

How about using the engine block of the Legend C35A? And using the VTEC head??

Just like in Civic/CRX scene people convert the B20B engine to VTEC using the B16A VTEC head. (With few other mods)

When Honda was building the NSX, they first wasn't building a VTEC car, they just had tuned version of the Legend engine. Because Integra and Civic already had VTEC in them, they thought the flagship car should also have them, so built the C30A...

Asuka

 

[Briank]

DD

I have not heard of any one getting boring out a NSX motor. The cyninder walls are very thin to start with. The block is die cast which allows very close sizing of the alunium block unlike sand casting that is used with iron blocks which leaves much more "Meat" in the cylinder walls . For more power forced induction (supper charger or Turbo charger) is the methiod of choice for most. Nitrous oxide is also used to boost power for some but it is limited to short boosts of power.

Brian

 

[NA1 #2853]

I have thought of that before and have done a a small amount of looking into that, and the Legend block isnt as well built as the NSX block. just as if you were to compare the b20 to the b18C5.
mainly the main caps, and the main cap girdles, and the block webbing.

I would like to buy some head gaskets for each car and compare them to see if it even comes close to be able to do that, but i would rather keep the NSX block, and try to find a new CRANK from a TL, CL, Legend, or Accord V6 that would fit in and then get custom Rods and Pistons.

Or just wait until Toda releases their CRANK/RODS/PISTON kit that is "TBA" on their web site. Those are supposed to be the same pieces in the 3.5L JGTC engines.

-Ray

 

[nsxtasy]

Why don't you just try it, and tell us how long it lasts?

 

[JDM JUNKIE]

Sorry,
Aside from the 3.2 T-belt I don't think you will see anything from Toda until next year!

 

[designdoctor]

dimensionally speaking....

To all NSX experts,
Thanks for all the great posts regarding the engine up grade on the NSX. Much appreciated!

FYI, there were some speculations made back in the mid 90s, where Honda racing will migrate their F1 power plant- the quad-cam, naturally aspirated 3.5-litre V10 engine for commercial use. I don't recall the actual dimensions of that V10 block, but if they could package that motor in the new NSX, that would be an awesome package!

Does anyone know the rough dimension of that engine compared to the current 3.2? I'd sure love to see that fitted into the new NSX model year(if there'll ever be one).

Thanks,

DD

 

[Factor X Motorsports]

DD,

If you are interested in a normally aspirated 3.5L NSX motor give us a ring and we will try to help as much as possible.

 

[MAJOR STONER]

Sequential Shifter Kit

I found another shifter kit (NSX NA-1 180,000 yen), with a couple of pics.


http://www.ikeya-f.co.jp/topics/news.htm

 

[ctrlaltdelboy]

hey Factor X - how come your website says 'coming in April'?
April of which year?