All of the FWD cars have 10:1 with the same cams to the best I can tell. I do not have info on Chrysler FWD stuff but they were rated from 135HP on up. I sure have no interest going back to the dark ages and see no value in it for anyone else.
Frank, I would defiantly use the car cams with your blower engine, in fact get the Knock sensor and add that circuit into the MS for the future.

Thanks - that solves that riddle and indicates that the Montero/Raider 8.9:1 CR heads have the same cams as the SOHC 12v 3000GT/Stealth cars. That suggests that the HP/TQ changes are due to spark timing and intake/exhaust manifold improvements in the car platform.

The Diamante 10:1 SOHC valve timing specs came from here:

web page

Charlie - I'd like to include knock sensing, but I've read that the sensor mounts in the valley and there's no boss provision in that area on the early 6G72 blocks. I guess I could install a sensor somewhere else on the block, but I'd think the OE location might be the best way. Maybe I'll look for a different block and see what can be done.

Frank

cars had variable intake

Today I looked at 3 Diamante engines in the junkyard.

1) 3.0L 24v DOHC - no interest - don't want a low mount alternator in an off-road truck.

2) 3.0L 12v SOHC sedan - one rusted cam - no interest

3) 3.0L 12v SOHC station wagon - has the knock sensor mounting plate w/sensor - made a deal for $350, but then asked them to look up the interchange on the sedan and station wagon, since car-part.com lists the engines as "non-interchange".

Their answers were a bit muddy, but I did hear that there is either a difference in the cams between the '92 Diamante engines and the '93-'95 - or - there is a difference in the station wagon and sedan cams.

Does anyone have any information on this? I'd like to buy the engine just for the block and cams, but I don't want to pay $350 and have to also buy cams.

I'm already thinking I should pass because this engine isn't the original one that came in the wagon - it's marked with the name of another nearby junkyard, so there's no telling what it might be - but the station wagon/sedan and '92/'93-'95 questions remain if I find another choice.

Frank

I've found it hard to find info on the SOHC diamante, as most of the knowledgable tuner types run the DOHC engine. Good Luck. Once I get Get my transmission swapped out I can turn more of my attention to the engine. Looking forward to hearing what you find out Frank.. With all the differrent cams out there it makes you wonder how many Montero's or Minivans for that matte are running around with reman engines with incorrect cams??

Charlie and I are PMing on this now - you're right.... it is VERY hard to find information on the Diamante engines.

I did find the link below - it shows the '92 Diamante to have one version (202HP/199lb-ft) and another version (no power spec data) - different acceleration times and surprisingly the LS with no specs is quicker.

The '93 Diamante wagon is slower (weight or gearing?), but doesn't give HP/TQ data.

Perhaps a trip to the local dealer is the best way to find out... if I can beg a few minutes with their archived shop manuals.

Mitsubishi Specs

Frank

Charlie is indicating there may be a difference between Australian and Japanese production wrt CR and cams. I think he may be on to something. I found a Diamante forum that contains some info on the sedan/wagon production origins:



diamante owners forum

I'm guessing that only the Japanese produced sedans have the more aggressive cams and 10:1 CR.

Frank

Aha! From the Diamante owners forum, I found a spec reference for the '92 DOHC 24v engine:



So, if the above non-spec'd version is the SOHC 12v, it may be that the SOHC 12v is quicker off the line with only 175HP, but the DOHC 24v is probably better up top - likely much better for a light, high-revving sports car with a M/T. Here's an interesting snip from the same forum:



I agree with his suggestion wrt the SOHC engine - particularly for my purpose - but he doesn't mention the station wagon engine. It's looking like the 10:1 CR sedan engine has the cams I want.

Frank

I do not know if I can get to it today or not but my station wagon engine is sitting in storage, I may try to get a chance to lift a valve cover and get a cam code from it. I was on the phone with a customer most of last night and did not get far with relearning what I thought I knew. There are more variations in the SOHC 12V than I thought.

Today I went to the new Mitsubishi dealer and asked to look through the shop manuals for Diamante cam specs. After all of the parts I've bought from them, the answer I got was that they didn't get the FSMs from the old dealer due to a p*ssing contest over the dealership sale. Sooooo, I went to the old dealer and asked them if they had them..... no, they had given them to the new dealer. <img src="/forums/images/graemlins/rolleyes.gif" alt="" />

Anyway, a mechanic offered to look in the computer program - no luck... didn't go back far enough.

I just called the dealer in Augusta, GA (home of nice folks) who have been a dealer for a long time. Right away, they said "Come on over here - you can look through any FSMs we have - and we have the FSMs for both the station wagon and sedan." <img src="/forums/images/graemlins/smile.gif" alt="" />

So, I made an appointment for next Thursday - it'll be worth the 120 mile drive to get the specs for all Gen1 Diamante years..... and I might even buy those good ol' boys a hamburger. <img src="/forums/images/graemlins/kewl.gif" alt="" />

I'll post the specs when I get them.

Frank