acuraboy_RENAMED

what about tranny bolt patterns? from what you've mentioned MDX-S, it seems that a late model MDX 3.5 should be transplant-able into the tl/cl. seems like it would be a better starting point since it doesn't require much block work = stronger block. then u could always bore it out later if so desired.

typeR

i think you'd have trouble boring in out...it's sleved you could stroke it NP...however its the same block ...so its not stronger

acuraboy_RENAMED

if the blocks are the same and one is 3.2 and the other 3.5 o figure the difference in displacement comes from a variance in deck height. so far this thread is talking about boring a 3.2 so that it displaces 3.5. doesn't that effectively make the cylinder walls thinner and thus not a strong as it was prior to the boring? not talking about sleving just the block itself.

typeR

its is NOT a larger diameter cylinder it has a longer stroke...thats how the 3.5L is achieved same as accord same diameter as ours just shorter strok....
this thread is not talking about boring a block to 3.5...its talking about the exact same block stroked to 3.5 with some other enhancements that achieve a lot better number than a straight MDX transplant....

acuraboy_RENAMED

o



so would u say that an MDX short block with some modded heads would be a cheaper alternative?

typeR

well i dont know about that...the pistons are different...the MDX has a compression of 10.0:1 and ours 10.5:1 and the syncivic 3.5 10.87:1 amoungst other things ...i guess my answer would be the same thing doug said to scalbert about his attempt at RES...good luck...why would you experiment for a cheaper alternative...that could end up losing you power and costing you more money

JRock

Still waiting on the answer to this from page one.

acuraboy_RENAMED

just throwing out ideas/options.

it also seems like 10.00:1 is already a pretty high compression ratio. i could see how if u were to leave the engine alone, 10.8x:1 is an awesome ratio. but people will put pulleys, intakes, S/C and not always use high octane fuel. which if u did any of this w/ a 10.8X ratio i'd think u'd be looking at some significant detonation. i'm just thinking based on experience from american musclecar engines so i really don't know if the dynamics are all that different with powerplants from across the pond.

thanks for all the info this far

Closer

American Muscle didn't have computer controlled adjustable timing.

acuraboy_RENAMED

but does that change the stresses of an almost 11:1 compression ratio or just optomize the use of that compression? retarding/advancing timing will only do so much to reduce detonation when u're in that neighborhood.

typeR

from 10.5 to 10.87 i think is no problemo

typeR

the reason no ones answered you question is...everyone knows there's no way you're coming off with any MONEY for a mod like this ...you cheap bastard

j/k ...mdx-S is a partner of doug foss' syncivic...this is the genI 3.5 upgrade it is upto 315hp/260lb.ft at the CRANK with your headers and your cold air(neither of which you have...((see cheap bastard)) ) but dont go peeing on the parade here, if someone could get ericL to post his dyno again you'll see a huge jump in torque...and as i posted track times tell it all...

i may end up with one of these real soon...my car is in the shop now, and i belive there's is a major problem with the engine from water damage from 2 weeks ago and if i need a shorty... it'll be this one

Water-S

just guessing what kind of 1/4 times would the CL-S turn with the motor kit.(i'm thinking low 14's maybe high 13's) with slight mods like headers,pipe and cold air intake and this motor kit maybe a CL can take out a Mustang Cobra

acuraboy_RENAMED

anyone have long-term testing/data?

typeR

there are track times early on in this thread 14.1 was achieved...with better rubber i.e. draggers high 13's are very probable
cobra...depends on the cobra..certainly not the new one ,not ever..not with the comp blower and the genII 3.5

Davediego

dont forget that 14.1 was in 90 degree weather and 95% humidity or something as well

RAdams

The black 3.5L CL-S had an 18" wheel/tire combo.. I want to say they were Toyo's. Whatever the case, they were brand new.

Let me assure you that the relatively poor 60' times are not due to lack of power. They're due to an abundance of power and FWD. It was smoking the 18's out of the hole pretty badly. A friend of mine ran the car a couple of times and managed to smoke the tires all the way through 1st and into 2nd while attempting a brake-torque launch. It would take a bit of practice to nail the launch, but your reward would be consistent 13-second passes.

Oh yeah.. those new tires... I recall going back to the dealer a few days after the track test and Doug mentioning to me that something like 5/32" of tread from those tires was no longer attached to the tire. From what I saw, that 5/32" was littered down the side of the car -- all the way to the leading edge of the rear-wheel cutout. Smoky burnout indeed.

astro

so is ANYONE going to take me seriously???

I have the money, and I want to buy this mod...I'm waiting for someone to talk to me.

bullaculla

I've been talking to dean. he has answered a lot of my questions, and is trying to get one done himself. If all goes well, I'm hoping I can get one through him if ACP.com can't help out.

mattg

get the sc

mattg

i guess you'll prolly do both :o

MDX-S

The 3.5 acjieves its stroke in the crankshaft throw, with a ***shorter*** Rod, which as we all know is the weakest link. That said, the 3.5 would be more boost durable than the 3.2 motor....and the compression ratio causing detonation can be compensated for by lots of fuel under higher boost loads. The 3.5 with an S/C would spank a 3.2 S/C even if it had a 50 shot in its back pocket....

MDX-S

And another thing about NOS shots....many members say they have a 50, 75, 90, 100 shot of NOS....to know what shot you really have is to go to the dyno with a known crank HP, ie stock of 260HP (-S), dyno pull the car and record a number of ~200HP for a powertrain loss of 23%...then pull the car and hit your shot and record the difference. If you record 260HP, assuming a slightly greater loss of 25% at the higher power loading, the math would indicate you have a 87HP shot, or 347 crank HP. The story is dont assume the "jet" size is your HP shot.

acuraboy_RENAMED

THAT'S FRIGGIN AWESOME!!!

so the 3.5 that u're offering has a shorter rod than our stock 3.2 but u're 3.5 has a longer crank throw than our stock 3.2.
that's some elegant engineering right there

astro

I am not doing the supercharger....I can't put in the smaller battery which is necessary....
I do however plan to buy this 3.5 block, and replace all the internals with boost ready parts for my twin turbo setup

scalbert

Just out of curiosity regardless of the direction, but why no relocate the battery ion your case??

spiroh

Astro,

I assume you are going to harden the tranny, before doing the TT setup. Have you found any places to harden the tranny? I think I might jump on this 3.5 mod as well. From there who knows

spiro

astro

I don't have anywhere to put it save for the passenger compartment...

I am already full in the trunk, that includes a second battery in fact...

scalbert

WOW!!!!, just ask your passengers not to kick the battery or drop metal objects on it...

typeR

howabout a larger alternator and only the one batery already in the trunk

RAdams

This should also quell any fears that revving the 3.5L to 7000 would be dangerous: the shorter rod gives a better rod ratio.