Engine and Transmission Tech

Art, For IRS, I have a R230 Nissan 350Z diff. It is 3.69 ratio with Viscous LSD. 9" ring gear. It is a little too big for what I want and I would trade straight across for an 90-96 Infinity Q45 R200 8" 3.54 ratio ( same large 6 bolt axle flanges).




Edited 2 time(s). Last edit at 04/21/2010 02:19AM by mgb260.

Jim, thanks, but I'm looking for a "modular clip", like Series, II RX 7, only stronger.This to reduce fab. requirements. BH and R 154 trans are on the way. Trans looks "beefy".New supplier, we'll "see" how good. First build on eng. to be steel crank, Magnum 5.2L, re-ground roller cam and Edlebrock heads and dual plane. 400 lbs. ish ? Safely twist to 7K. Max power probably less. I like, "Jensen Healey Hell-fire". Anybody ? roverman

Art, Check out Granny's Speed Shop web site.Second generation RX7 Turbo II has an 8" ring gear,4.10 ratio with 4 pinion clutch type posi, and is used in a lot of V8 swaps.It would be a very fun car!



Edited 4 time(s). Last edit at 04/27/2010 09:57PM by mgb260.

Thanks Jim. I shall check Hot tip just in, reportedly 93'-95',(all turboed/series III RX 7), have"all gear" LSD,(no clutches) and 8" ring gear. I'll probably not need this. roverman.



Edited 1 time(s). Last edit at 05/27/2010 11:11PM by roverman.

Clan, Got R154 and sbm. BH. today. I will either need to put it in a "rat rod" or shorten/find a shifter less than 2 ft. tall ? Shifter "only" was from their pile of same. Suggestions ? Thanks, roverman.

Should be easy to shorten shifter. My Ford tranny looked like a truck shifter until I took the angle grinder to it. Then rethread to shift knob of your choice. Shortened the throws real nice too.

Jim, 'cept thisin got rubber n-it and sheet meatal r-ound it. I do "stinky" welds with-out rubber. Probably a non-issue till I do a first in-car mock-up. I suspect I'll learn to say..."this car rips". roverman.

I've seen that kind before. I think the V6 guys take the S-10 one apart,shorten and put back together. If not on this board maybe the MG Experience board. I think, Bill Young maybe. I'll do a search.



Edited 1 time(s). Last edit at 04/28/2010 08:59PM by mgb260.

Art, Supra short shifter off Ebay $160. I couldn't find the thread, but some Mazda guys use a torch to melt the rubber out,shorten and fill with hot melt glue so outer shroud doesn't turn.




Edited 1 time(s). Last edit at 04/28/2010 11:02PM by mgb260.

Jim and clan, think I might be missing something in "Grannys". I could'nt find a link about rear ends. I don't think mine has the 8" ring gear, probably non-turbo. I'm tempted to try it. Retro a stronger pumkin later ? I have a 10.5" Centerforce clutch assem.,with "marcel" in the disk, should be adequate. Lead on a alum. flywheel, or lightweight steel ? Considering using "scales", for if/how much, to move front wb. I want close to 50/50. HR. mag had a 2 pgr. on hi-dollar 427, side oiler, Tiger-could have been, clone,(had Shelby, the time, in the day). Track car only, and they "rave" about the handling, maybe compared to a regular Tiger ? I'm looking for less"fear-factor", and more overall performance, corners, stopping and road use. Time will tell, roverman.



Edited 2 time(s). Last edit at 05/02/2010 04:57PM by roverman.

Roverman, The info on RX7 rears is near the bottom of the page on this link in general info:[grannys.tripod.com]

Jim, WOW...wow ! Sooo, the 7" ring gear woun't "quite hold", 998hp/1180 ft. lbs. and "only" 9.03 in 1/4 ? I must try it. Healey should weigh-waay-less.Thanks, roverman.



Edited 1 time(s). Last edit at 05/02/2010 05:51PM by roverman.

Art, I agree on the dual pattern cams being unecessary for the good aftermarket heads but, sure help out with the stock heads(Ford and Buick and Caddy) puny exhaust ports. Woops. Should have posted on serious cams thread. Where's Nic anyway, I don't want to be the only cross poster.



Edited 1 time(s). Last edit at 05/02/2010 06:31PM by mgb260.

Where indeed, is Nic ? Last I heard, the Weiderholderer?, family was headed to sunny CA. We haven't been having too many alien abductions, out heer, lately, sooo ? Paul, what about these,"lumpy bumpies", I'm tryin to un-load ? Oops, now I'm a cross-poster, better than a dresser, roverman.

Ok, 26" tire,4:10s out back and a Supra R154 box, .753 od . I think I need more cam, for max power around 7k. ? Current mech. roller is single pattern, 226 deg. @ .050", 110 lc. and .446" vl. with 1.6/1 sbc. roller rockers.Thought is max hp. in 1/1 4th. and near max torque in 5 th. for, O' blessed mother of accelleration ? Anyone ? roverman.

Too thin ? I think so. Standard bore,Magnum down to .105" wall.sonic tested), on non thrust, with planned .03"over bore, I think not ! Reportedly,"all" these blocks are, "nickle fortified". May have to go with,71'-74', pre Magnum,(reportedly thicker walls),w.o. oem. roller cam benefit. 340 block, a pricier option. Race block, way too expensive, roverman.

Art, There are more and more newer Hemi's popping up in junkyards. Would bolt right up! Do a nation wide search on car-part.com. I checked for you. A whole page between $1000-$1450. I wonder if they are thin too.



Edited 1 time(s). Last edit at 05/17/2010 12:51AM by mgb260.

Jim and clan, your input is well received, but for this project, I want "period correct" apppearance.This car is about, what Chysler/Jensen, "could" have built. I'm already getting flack, for messing-up a rare classic,( obviously not in this forum). If/when I were to install a "HemI" in one of my misfits, it would need to be on top of a Rover block.The 318,(Jensen Healey Hellfire), baseline motor, will have easy 400 hp. and adquate adrenaline attached, to get started on the sorting-out process. Thanks, roverman.

Calvin and clan. Impressive engine and used prices are falling comparable to LS motors.Basic dim's. comparable to a 318 with 360 crank and "smart", hemi heads.533lbs seems a "little" heavy for alum. heads and plastic int. One problem for swapping this motor into cars that must be smogged, some states,76' up, CA. for one,you must meet visual inspection and road dyno emissions. 75' and prior engines/cars, most states, no problem. I'm considering, best of both worlds, a smart hemi, aftermarket head design in a bolt on conversion of the LA/Magnum sbm's. roverman.

Clan, Just ran Comp Cams, "camquest 6", program to pick a std. available cam. Build: 5.2L Magnum, Edelbrock Performer RPM heads, single plane with 750 cfm. Thermoquad, 10/1 on gas,small tube headers w. mufflers,2,500 lbs., street/strip use. It said use grind XR274R(mech. roller). It predicts 524 hp.@6,500 and 468 ft/lbs@ 5,000. If this is even,"close", I'll need a change of under-alls ? Dan Jones/anybody ? roverman.