Just wondering if there are any DOHC L-Series heads. I know that head swaps are pretty common with the H-series motor from my 7 years with my Prelude... and the same with the B-Series.

Any twin cam JDM motors? Any benefit to swapping the L18 head onto the Fit?

Thanks for any input in advance.

~Peace

 

No...........

 

No to what... the DOHC heads, or the benefit of swapping an L18 head onto an L15. I would assume that it would have larger intake and exhaust ports... Both are i-VTEC, and it's the same block so I'm assuming that there would be little machine work (much like the H22 Head on an H23 block) or none what-so-ever. Anyone know if someone has flow tested these heads?

~Peace

 

dude get your facts together, engines aren't as simple as they were, our engines aren't Ivtec and i've never heard of an L18...except nissan's L18. but did you mean R18?

 

Can I ask what you're even talking about? Am I wrong for assuming that a larger displacement, higher powered motor would have larger intake and exhaust ports? My experience with the H22a1 and H22a4 has shown me that Yes, they do.

Am I wrong about the type of motor found in the 07 non-Si Civics or the USDM 07 Honda Fit? L18 and L15 respectively, correct?

Am I wrong that a Dual Overhead cam motor the increases lift and duration on all valves above the VTEC crossover would be more beneficial than an economy version that merely opens a second valve on one side of the block?

Ask me about an H-series and I'll know wtf I'm talking about. I'm here to learn about my car and some of my options... not to get one sentence responses that are of absolutely no help to me... I was under the impression that people post on this web board to find out information on their cars. If we all know everything about everything then what's even the point of posting on here? I'm pretty certain that there are no other L-Series DOHC motors in the US, but was wondering if MAYBE in Japan there were considering that Honda's product line is much more expansive over there than it is here.

~Peace

 

You edited your post after I posted my last one. Yes, I know that engines aren't as "simple" as they once were, but correct me if I'm wrong... there have already been numerous K-Series head/block combinations that not only run, but produce results and that motor is relatively new...

So the Civic is an R18? Thanks for the information! That's the kind of thing that I'm looking for! Also, I didn't know for sure if our motors were i-VTEC VS VTEC... I know it says VTEC on the valve cover, but I've seen elsewhere on this board that it was i-VTEC. My mistake

So does the L-Series exist anywhere besides the Fit? Is it used in any other production models?

~Peace

 

yeah i didnt want to sound like an ass, but yeah there has been k20 heads on k24 blocks but they are in the same engine series, L series are for the fits and the L15a is the strongest one.

 

I thought the Civic was an L18. I guess I was wrong... thanks for the info.

Well... there goes that idea. I googled to try and find a list of all honda engine codes with power output and couldn't find a single one that listed the L-Series... I figured I'd toss it out here.

I appreciate the input... sorry if it was a n00b question, but the Fit's new to me. I'm sure you were all at that point once. Just looking for an alternative to dropping the butt load of money needed for a K-Swap. Maybe we'll get lucky with the next gen Fit. It's weird to me having no options like this...

~Peace

 

What I want to know is if there would be a benefit in dropping an R series in rather than K. Probably not reasonable, but I know R series gets good mileage and more hp =) haha

 

the R18 would look to be more work to fit in the Fits engine bay... just dream about Kseries swaps instead....

for the last time THERE IS NO DOHC head avalible to swap on the Fits L15.

 

I was giving the R series motor a thought. They make good power, still get good MPG, light, and other little things that can keep it in mind.

BUT, its all back asswards. The exhaust mani is up front and intake mani is in the rear. Did anyone notice that?
And theyre weak with any kind of forced induction.

 

just as a crazy thought to throw out there...how different are the heads on the smaller l series engines? take a small block chevy- the heads for a 305 will fit on a 350. the only difference is in the combustion chamber size and valve size. a little machining to make the valves bigger and you have increased compression ratio quite a bit with the smaller combustion chamber. higher c.r. will make higher h.p. am i way off track with this? how far off is this theory?
dave

 

Not sure... I remember there being some discussion about this on another forum with another block but I don't remember any results.

Dman... I used to live in Crystal Lake. I was actually just out there with the Fit today.

 

really? you think that's ass backwards? I guess b/c the Fit is my first car I've owned with the exhause manifold in the rear.. I've owned Integras for fives years before the Fit and the header has always been up front with the intake coming from the rear.. I'd call the K and L ass backwards lol

 

I didnt mean it like that. All the cars Ive had are facing the "right" way. I meant compared to the L15.

 

gotcha ! I didn't realize the R-series sat like that though. I figured all the newer engines sat like how the K does.

 

So did I.... Then I want to help install foglights on my friends GF's Civic Ex.
I was like "Ohhh!! I can compare the motors." Then I noticed the difference.

 

resurrecting this dead thread because the L15B1/L15B7/etc have a DOHC i-vtec head (and even turbo manifolds)... I wonder if any one's experimented with franken-L-series mashups.. random https://www.torquecars.com/honda/l-series-tuning.php

 

yes I to am interested in doing a dohc head swap from an L15B on to my L15a7 if it is possible.
the reason i'm not going with a K series is because as much as they are superior and I loved them from countless 8th gen civic si's i've owned,
type S RSX's, and 9th gen si's, I'm looking for something new for fun to work with and I also want to keep this thing with a smaller engine for the fun of it.
If the L15B head cannot be swapped onto the L15A block, maybe i will look into the L15B turbo motor to drop in. Still want this thing to be a gas saver but with decent daily power.