[Garenty]

Sorry if this sounds naive but doesn't 112 contain lead?

To get around running expensive race fuel one could install a water mist injection system.

I have a customer who installed a full time water mist injection system with a RPM window switch on his NA 07 Civic Si, runs 87 octane and gets better fuel economy and more power than when he ran premium alone. He says he only has to fill the reservoir every 4 or 5 days.

No lead in PRO-FUEL, they have no lead fuel untill 116 octane. I would bet a properly tuned car on 112 race fuel pollutes less than the 87 octane pump gas formulated to put more money in theire pockets. Have you ever taken apart a motor running on 87 or whatever 94 octane pump gas? erverything is cruded with cabon & youre oil is black within 1000 km, something is not burning right. On Racefuel the engine stayes perfectly clean, therefore polluting much less. But i'm sure water mist systeme would be better(never heard of it by the way).

 

[joe_bocc]

There is one thing about the 2008 CRV block that I like, the oil filter location is in the vertical position right next to the oil pan.

This good because it easily allows you to fill a new filter with oil when doing oil changes.

You're right. I didn't believe you at first but I looked it up on http://www.hondaautomotiveparts.com. Thats a nice feature but unless I was told otherwise, I'm worried the K20A2 oil cooler couldn't be used.

I'm favouring the K24A1 block right now because it cost less, the K20A2 oil pump will bolt right up without modification and there are no oil squirters. If I can find one for the right price, I'd rather the K24A2 crank thrown in the mix.

 

[joe_bocc]

No that is at the wheels. I'm using 112 octane , i made this decision before build-up, i drive it only to the track & weekends, its double the price of gas but well worth it if you add all the advantages, keeps engine cooler & specialy cleaner, just got to check youre KM the oil never gets dirty.

I like this idea. I might have to look into where I could get that grade of gas around here and how much it costs. Can you buy 112 a tank at a time or are you only allowed to buy it by the drum?

It seems like it might be a hassle for just the extra power, but the benefit of running cleaner aswell is nice.

 

[KidnKorner]

You're right.

I only knew because my mother-in-law brought her CRV to my shop for a nice 0-W30 Amsoil treatment.

I have had a couple of customers who have done oil filter relocation kits on K20A2's so the can mount it in the vertical position and get to the filter easier.

I hate to thread jack but while we are on the oil change subject I am ordering a couple of these for my shop.



I found them in the sky mall catalog when I was flying to and from salt lake city for a convention.

http://www.autosportcatalog.com/auto-accessories/7l-hand-pump-oil-extractor-2.shtml

 

[JuicyJoint316]

I took a K24A1 crank and a K24A2 crank to the balance shop and the K24A2 crank had far less deflection at higher RPM's, so yes the K24A2 crank is stronger.

could it be bc of the stonger/thicker rods? bc both cranks are have counterweights

 

[joe_bocc]

could it be bc of the stonger/thicker rods? bc both cranks are have counterweights

I'm not going to pretend to know how a crankshaft is balanced, but I don't know how much the strenth of the rods affect crank deflection. It might have been a "magic crank" but it was mentioned above that when one was brought in to be balanced, it barely needed any work.

This might be something I have to test myself and report back on it. It wouldn't be for months thought. The frank swap wouldn't be until next winter's project.

 

[joe_bocc]

I hate to thread jack but while we are on the oil change subject I am ordering a couple of these for my shop.



I found them in the sky mall catalog when I was flying to and from salt lake city for a convention.

http://www.autosportcatalog.com/auto-accessories/7l-hand-pump-oil-extractor-2.shtml

Thread jacker!

This actually looks pretty cool. the website says this is how Mercedez techs have been changing oil for years. My only concern would be whether any sludge or particles at the bottom of the pan would be sucked out.

 

[talonxracer]

could it be bc of the stonger/thicker rods? bc both cranks are have counterweights

That was both with and without the bobweights.

When I had my NIB 06'TSX crank balanced it was the closest to perfect that my balance shop guy has seen in his 30 years of balancing engines. The K24A1 crank was not and the balance changed at different RPM's, even after completely balancing it to the rods and pistons it still had deflection at higher rpm's, this told us that the TSX crank is different metalurgically and/or manufacturing wise from the A1 crank.

I doubt a basically stock rebuild would see that much difference between the cranks as long as they were balanced to the rest of the rotating assembly, but if you build it for alot more whp than stock it will show itself in longeviety and repeatable results.

 

[JuicyJoint316]

That was both with and without the bobweights.

When I had my NIB 06'TSX crank balanced it was the closest to perfect that my balance shop guy has seen in his 30 years of balancing engines. The K24A1 crank was not and the balance changed at different RPM's, even after completely balancing it to the rods and pistons it still had deflection at higher rpm's, this told us that the TSX crank is different metalurgically and/or manufacturing wise from the A1 crank.

I doubt a basically stock rebuild would see that much difference between the cranks as long as they were balanced to the rest of the rotating assembly, but if you build it for alot more whp than stock it will show itself in longeviety and repeatable results.

what was the rpm limit on the crv crank compared to the tsx crank? or atleast what rpm the vibration levels was felt thru both cranks>?