anyone ever swapped tls cams in base Tl ? Also does anyone know the specs of both cams (lift. ,duration)...thinking about doing swap just tring to gather some specs and info............

 

its been done before. i got tl-s cams and i think ussi does. i don't think anyone knows the exact specs, but the tl-s does have a higher lift. how much power it makes, i have no idea. i installed all my parts at once.

 

Yah, i have a thread on it somewhere if you do a search. Some accord ppl have put it in also and have seen gains. It's a straight swap.

 

I don't really get how this works....cams from a 3.5L motor to a 3.2L? Doesn't sound right

 

I was thinkin the same thing. Then again im no mechanic lol. Any care to explain how this works?

 

Basically the TLS and TL cams are very similar except for small variations in lift and duration. If you compare them side by side they'll look identical. The TLS cams are also hollow which makes them about 2 lbs lighter as well. So basically you're messing with 'how long' and 'how much' the valves open. Bottom line its a safe mod

 

But isn't the stroke on the 3.5 slightly longer, so you'd have time for longer lift and duration? In the 3.2 you don't have the "extra" time.

(not that I totally understand how lift/duration/timing works, but I don't get why a straight swap is all upside and no downside)

 

If anything, there might be slightly rougher idle and low rpm operation. From what I understand, alot of the 3.2 parts are the same for the 3.5. Also, cutting 2 lb's with hollow cams is worth it in its self. Thats a hell of alot of dynamic weight to cut, similar to bolting on a light weight pulley.

 

the cams work. I think the larger displacement is probably due to the bore diameter of the piston or a increase of stoker length on the crank. I could be wrong so don't quote me on that.

 

thats is correct. the heads are the same. the block has been stroked/bored slightly to make the bigger displacement.
if u are familiar with integras, think of the ls compared to the b20 motor in a crv same motor only the bottom end bored out from 81mm to 84mm. everything else is the same



<A-tech

 

Stroke Only:



http://www.hondanews.com/categories/...1?archive=2007


Not trying to say in any way that swapping the cams doesn't work/won't work.

Just asking for someone to explain why longer lift and duration on a shorter stroke is a good thing. Why doesn't it throw the intake/exhaust/ignition timing off?

 

The cam duration and lift is ground relative to crankshaft degrees of rotation. Bore and stroke have nothing at all to do with it (for this argument).

In 180 degrees of crankshaft revolution, the piston is going from TDC to BDC no matter if it has a 1" stroke or a 4" stroke.

Generally a larger (displacement per cylinder) engine can get away with a longer duration cam before encountering emissions, drivability, and most importantly loss of low end.

Faster ramp speeds are usually the best of both worlds but require stiffer valvesprings and are a little harder on valvetrain components.

In the real world, a 3.5 cam in a 3.2 will move the power band up in the rpm range a little and show some hp increase up there. Compression tests will show a little less compression during cranking due to the extra duration.

This has the potential to help with some of the part throttle low rpm pinging.

 

thanks for all replies sorry it took so long will have a update in about 3 weeks getting. Competition clutch disc stock ppessure plate , tls cams .. Already have rv6 products ....

 

sorry it took so long to reply but I will have update and hopefully dyno numbers ... I'm gonna have the tls cams installed along with competition clutch disc & stock pressure plate ...stay tuned

 

did any of you guys change springs and retainers to hold longer lift?

 

^ I didn't but I think you should.

 

I think that's good advice cause I would hate to drop a valve ...Any idea how much the dealer wants for types springs and retainers? Or anyone knows who makes aftermarket ones to fit

 

^ you need to get the stock springs from the dealer. I think they were like $8 a pop.

 

First of all thanks for your help.....How about retainers do you think tls ones are stronger or the base & tls are the same..

 

update

 

Car is currently in shop getting some work done got a suprise coming up I'm sure you guys will be more than interested ... In testing stages right now .....

 

^TELL US!! haha

 

BTW what is the part # and price on the shafts??

 

LOL did you guys ever get a chance to dyno your cars with tls cams?

 

Let us know if you changed the retainers as well.

 

Yes I did, but like I said before I also did other mods at the same time - port & polish and procats, so I don't know exactly how much I gained from this mod alone. I'm sure you'll see a 'jump' on the dyno graph around vtec engagement and maybe a few more peak hp.

 

You know what the next question is , how much did it make?..................know you guys probably heard people asking a million times but what you think about a bolt on Turbo kit for our car that comes tuned ?

 

i was thinking of this aswell...but i was also thinking of mdx cams...
would MDX cams fit and how much of a gain would they give over TL'S cams?

 

325hq/265trq I believe (before my reflash), I'll have to double check my dyno sheet it's on here somewhere, but the search isn't working for me.

I would get the RL cams btw, they're even more aggressive than the type-S.

 

Ussi I'm tring to find my jaw it just fell LOL ... If you don't mind list all your mods or pm me last time I dynoed I got 276hp forgot torque but clutch kept slipping , then some people on forum thought that was unrea lbecause it's not a types.........

 

What clutch steup are you currently using? I'm currently testing a new clutch setup for our car that allows use of stock pressure plate & flywheel .... No chatters smooth engagement & soft pedal

 

Haha don't be too impressed i was using a dynapak which reads higher than dynojets, but since i have quite a few runs on it i'll be going back there soon. Even though i have a reflash i might be doing some additional tuning w/ an AEM FIC for the 3.5l.

I'm running the clutchmasters stage 3 w/ a lightened flywheel. I'm having weird issues with it - it's been perfect for 6 months, then for the past few days the gears haven't been fully disengaging, but it's really inconsistent, sometimes it does sometimes it doesn't. Let me know what you end up running for you clutch bc my stock clutch just couldn't hold my power.

Check my sig for my mod list.

 

What are the RL cam specs?

 

Here's a good discussion about RL cams vs. TLS cams:
https://acurazine.com/forums/showthr...ghlight=rl+cam

Jdmspec333 posted this about TLs cams, couldn't find the specs on the RL cams:

05 tl
low- .249
mid- .208
high- .249

07 tl-s
low- .251
mid- .208
high- .253

 

Loving the mod list .... Will let you know how clutch turns out but it should be more than capable of handling power according to manufacturer Ill be testing and redyno soon so let's see , will keep you updated......

 

Are you pulling your entire tranny out when you replace the clutch? I heard there is a way to get it out with pulling it completely out...

 

Too much work no time so my brother in Ga got my car he works at Acura so I went ahead let him do clutch & timing belt with valve adjustment........I hear it's a job & a half , I"m pretty hands on sure if I pulled it might need a tool or two but I'm sure I would get it done . I refused to pay 800$ to install ...

 

im also in need of a clutch as mine is slipping with the SC..
what do you guys suggest is a good clutch that will hold up with the SC and maintain a relatively long life span...as doing a clutch in this car is pretty extensive and costly

 

Interesting info. Any updates on those TL-S cams in the J32...

 

^ how much can I get the Type-S camshaft for?