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General Misconception of a TYPE II

13K views 47 replies 16 participants last post by  GSteg  
#1 ·
A growing number of you all are buying Legends because of their depreciated value and wanting to swap TYPE II engines or parts from it to make it more powerful well, i have news for you all, it may not entirely be worth your while. I pioneered the TYPE II setup back in 99' so my credentials speak for themselves.

The TYPE II is a bit better on paper, but the 30hp more the manufacture claims is hardly that. I like the TYPE II because the manifold is cleaner with less vacuum sensors and such, however when compared to the RL manifold its the RL that is cleaner.This obviously has nothing to do with HP. As for airflow, there should be no doubt that a port and polish on any of these manifolds will do just fine. The RL again comes up supreme in my opinion because of the way the manifolds runners are radiused. Also completely removing the VIS is an option for top end power on any of the manifolds. More info on that as i get more driving in my car. As for the heads the TYPE II are the best, but by a very small margin vs. the TYPE I. 1mm bigger fuel valves, better exhaust manifolds,and a bigger fuel rail is about it, not much considering the level of work.

Comparing the componets that matter the bottom end is identical vs TI & TII.

Bottom line if you have to replace the entire engine because of necessity by all means go TYPE II, but if your looking for HP there are way better mods out there to give it to you such as, intakes, exhausts, ECU upgrades etc.

Anytime you go porting this engine out expect to lose TQ, and on a car like this that may not be something you’re willing to lose unless you go all out.


~TRu Hybrid
 
#28 ·
kkiepvvessau said:
LIKE You told me The RL block has Long Stroke, which is Rev slower than the Legend stroke. Example will be integra GSR and Type R. the TYPE R shorter stroke it kick in power quick. the Type 2 Head are best but the 02-04 Rl head 5 HP LESS then the Type 2. i rattle stay that way other than custom . with the money custom . i'm sure i can get mod for more than 5 HP
Ok good luck paying for a 02-04 RL engine. Regardless the specs between the Legend and RL heads are different no matter what year. the Legend heads are far superior in design. The closeness in their HP comes from their willingness to reprogram the ECU and Exhaust modification, not heads. Kenso can you pull up a tech sheet on an 02-04 RL vs 95 TYPE II? Mainly the heads since we know the displacment difference. kkiepvvessau You still havent made it clear what swap you have done if any.

~TRu Hybrid
 
#29 ·
LS92Sedan said:
ok where to start with this post. first of all I was a toyota lexus tech for about 5 years before I switched to my current job, I've worked on various hondas, toyotas, nissans etc, and ur a bit off base on the HG topic, they dont use steel for various reasons, most of em dont cuz they have aluminum heads, steel gaskets with aluminum doesn't mix, toyota nissan AND honda all use a metal/composite gasket for their gaskets, evidentally you haven't had urs apart yet. you must not do machining cuz last I checked they dont bore out valves or the valve seats. and I got news for you, stock BLOCK 2jzgte's have made well over 1200hp, so you must mean stock SHORT block, and no offense, thas a poor example, no car is gonna last very long at 900hp with a stock short block, but it's not the hp that kills motors, it's torque. Im interested in how you bored the stock sleeves to "3.5L", so what size are your pistons in mm please, and what is your current bore diameter. and no offense, but if you are decking ur block and resurfacing ur heads, wouldn't this cause some piston/valve clearance issues much less DECREASE displacement? Lastly, there is a guy in australia running a turbo with stock o ringed HG's on a C32A, think he said 500hp or so, regardless it just doesn't sound like you know what you are talking about, and I could be wrong, but ur grammar and spelling need some work too, not saying I dont beleive you about your 3.5L overbore, but I am VERY skeptical.
Ever heard of a guy named Marco? Reaserch it a bit.....
 
#31 ·
LS92Sedan said:
Marko Dejurik? yes I know him, good friend of mine actually, I know all the SP boys, and he was only making 880whp on his stock short block, and it didn't last long, in fact he spun every single rod bearing in that motor, then he went to a new set up with billet rods, forged pistons, polished and lightened crank etc etc, I know he just recently sold one of his supras too, not sure if it was the white one or not, but the white one was the fastest street import for a very long time, then the guys @ virtual works in Las Vegas one upped him, then Larry over @ SP one upped them, lots of competition in the Supra community.
What about titan motorsports?? I guess someone near me builds some of there motors...

I know someone that is selling a stock supra stick(well bigger turbo, intercooler,and a timer)
 
#32 ·
Dv8 said:
Kenso can you pull up a tech sheet on an 02-04 RL vs 95 TYPE II? Mainly the heads since we know the displacment difference.
~TRu Hybrid
The service manual doesn't go into fine detail on the heads, but it does cover camshaft lobe height and valve sizes. I think the duration of the RL cams is where a lot of the difference lies, but the Helms doesn't go into that. On visual inspection, there was quite a bit of difference in duration between my type 1 cams and type 2 cams. I have a spare RL motor sitting around, whenever I have time over the winter I'm going to see about making some in depth comparisons between the Legend cam profile and the RL's.

RL valve dimensions

Image


Legend valve dimensions (Type 1 and 2)

Image


RL cams

Image


Type 1 and 2 cams

Image
 
#33 ·
LS92Sedan said:
Kenso, that last post of yours was awesome, where did you find that info? I usually dont see anything that in detail unless it's on the computer systems in the dealers I worked for. Is that a mitchell manual? Regardless thas a very good quality shop manual
It's from the online Acura service info for dealers. Basically a online, searchable service manual. Definitely comes in handy.
 
#34 ·
yo chris,

Yup, they are on gary ave! I must have gone past them at least once somehow..Anyways i will contact them and see what happens. Also they deal a lot with turbo kits and custom so that could be good.

latta
 
#35 · (Edited)
LS92Sedan said:
Marko Dejurik? yes I know him, good friend of mine actually, I know all the SP boys, and he was only making 880whp on his stock short block, and it didn't last long, in fact he spun every single rod bearing in that motor, then he went to a new set up with billet rods, forged pistons, polished and lightened crank etc etc, I know he just recently sold one of his supras too, not sure if it was the white one or not, but the white one was the fastest street import for a very long time, then the guys @ virtual works in Las Vegas one upped him, then Larry over @ SP one upped them, lots of competition in the Supra community.
Yup, he sold "the" infamous white Supra on eBay on 10/20/05. The winning bid was $72,100 Check out closed auction #4574824399.

But that part about Sound Performance building a lot of stuff for Titan....eh, don't think so. I believe those two companies are quite competititve, and I have NEVER read anything about SP building parts/motors/etc for Titan, and I've been a member of Supraforums for quite some time.

http://www.titanmotorsports.com/900160mph.html

Nice to see other aspiring Supra owners in the forums.

And swift, I hope you have $$ to burn if you're talking about going to SP for custom turbo work. They are one of the best, and they charge for it, too.
 
#36 ·
Kenso said:
The service manual doesn't go into fine detail on the heads, but it does cover camshaft lobe height and valve sizes. I think the duration of the RL cams is where a lot of the difference lies, but the Helms doesn't go into that. On visual inspection, there was quite a bit of difference in duration between my type 1 cams and type 2 cams. I have a spare RL motor sitting around, whenever I have time over the winter I'm going to see about making some in depth comparisons between the Legend cam profile and the RL's.
Great Info Ken,
The RL is in between the Type I and II, thus making it obvious that the RL's block with Type II heads is the way to go unless, custoizing internals is your thing. The RL data sheets are from the newest model before going next gen?

Ken,
Pic # 2 right side is for the Legend, how about the RL? I want everyone to see the RL's cylinder head height vs the Legends. Think you can get the block height comparo too?

~TRu Hybrid
 
#37 ·
LS92Sedan said:
coulda swore SP was providing transmissions for Titan? or at least at one time Titan was using a version of the the SP400 trans, I might be wrong.
Maybe back when they first started, and they were trying to get off the ground, but since they've hit the big time, they went the way that pretty much all high hp auto MKIVs go: Powerglide.

Taken from their site, http://titanmotorsports.com/900160mph.html:
"B&M Powerglide Transmission"
 
#40 ·
Ken1997tl said:
Hmmm.. so I'm planning on trading in my '97 TL for a 2004 RL in a year or two. I'd obviously do the Type II conversion. Anything else I need to know on the C35? :)

Great job by the way DV8
ITs awesome??

Balancer shaft, forged rods, same compression ratio. Tq dives off at 2grand but if you do type 2 heads...4+...

I would do custom manifold though...to save headache.

Also i have more info....because of months of research..but you will have to PM me. :2cool:
 
#41 ·
Newbee here to the forum........I have an 94 LS and wanted to know how do i know if I have.....

a. Type I or II motor
b. Amerian/Japan
c. true hp from factory


I'm looking for things to do to make the car quicker but not crazy LOUD or a gas guzzler.
 
#42 ·
U should have a type II on the front runner of the intake manifold,
is it a coupe or sedan? coupe than it came with a type 2 sedan it did not come
if it is a jdm motor, it will have a H honda symbol on the driver's side fuel rail cover, usdm will not

hope this helped u man
Welcome to the forum
newbie faq will help ya on a lot of questions dont forget to read it and search u can normally find any question u may come across

welcome to the community man
 
#43 ·
Dv8 said:
Ken,
Pic # 2 right side is for the Legend, how about the RL? I want everyone to see the RL's cylinder head height vs the Legends. Think you can get the block height comparo too?

~TRu Hybrid
I was looking through some old posts and just now saw this, sorry for the delay. It turns out that the heads are actually the same height. What they did to compensate for the added deck height on the 3.5 was move the intake ports lower in the RL heads, thereby offsetting the difference.
 
#44 ·
im not a mechanical wiz or anything, but boring a cylinder is something i know about, I wouldnt do it. shortens the life of the motor to much especially with as little room as there is to work with. It wouldnt take long for the cylinder to start getting a convex shape and wear out the pistons. I raced motorcycles for years, and have gone thru this many times. Dv8 has the right idea 3.5l if you can do it.
 
#45 ·
LS92Sedan said:
I do have a question, hoping maybe DV8 could answer if not I might have to start a new thread, just had an interesting convo with a colleague of mine, he suggested a deck plate and stroking the rod length, now if my info serves me right the C35 crank and rods wont work in a C32 block, is this true?
Yeah, I posted about it in another thread recently. The thrust washers were relocated to a different journal on the 3.5 vs. the 3.2. Also the 3.5 crank counterweights contact the block slightly on the 3.2. So it's not easily feasible. Also, if you were to run a deck plate you'd run into the same problems with the intake manifold fitment that DV8 went through.
 
#46 ·
don't believe he had a clearance issue chris. WE need torque..but obviously with a longer stroke we will never be able to REv as long..., boring is great..but we would need to do new sleeving or come up with better cooling methods.

Quick question:

NSX is up to 290hp..but less torque i think???, with a shorter stroke...=revs higher...so is this because of it being DOHC...or the valve sizes etc. What is its compression ratio?? cant remember...just curious how a similar block creates 60hp more?? notice i said similiar..
 
#47 ·
LS92Sedan said:
yup Sound Performance build alot fo stuff for Titan, I also think AMS in Shaumburg does alot for them as well. I dont think people realize how much Industry and Machine work goes on here in the midwest, I think they expect us all to be cornbread fed, milk drinkin, cow tippers or something. BTW Ben, SP has a dyno and I know for a fact they aint far from UTI. ( http://www.sound-performance.com/ )

Kenso, that last post of yours was awesome, where did you find that info? I usually dont see anything that in detail unless it's on the computer systems in the dealers I worked for. Is that a mitchell manual? Regardless thas a very good quality shop manual
There was a shop that put out a few sick supra's right off the freeway in the U district in seattle, right by the Husky stadium exit...anyone know who that was?
 
#48 ·
swift said:
NSX is up to 290hp..but less torque i think???, with a shorter stroke...=revs higher...so is this because of it being DOHC...or the valve sizes etc. What is its compression ratio?? cant remember...just curious how a similar block creates 60hp more?? notice i said similiar..
There are too many variables that determines the power of the engine. :turban: