1986 IROC-Z engine build

[redsoxsstink]

i figured id start a project thread. ive been collecting parts for my motor build for the past two months. i have basically everything i need to drop the motor in aside from a few small bits.

the setup is as follows:
new GM L98 replacement shortblock
RHS 200cc/64cc aluminum heads
comp cams xr276hr
comp cams 1.6 ratio roller rockers
comp hydraulic lifters
comp double roller timing chain
ARP hardware throughout

should be in the area of 10.5/1 compression

painted with por15 engine enamel

not pictured but in the works is either a TPIS miniram or Holley/Weiand Stealth Ram intake

going in the car this spring and will be driven to Ocean City MD for cruise weekend

http://imagizer.imageshack.us/v2/1024x768q90/834/drql.jpg
http://imagizer.imageshack.us/v2/1024x768q90/838/ivb8.jpg (https://imageshack.com/i/naivb8j)
http://imagizer.imageshack.us/v2/1024x768q90/401/9sgm.jpg (https://imageshack.com/i/b59sgmj)
http://imagizer.imageshack.us/v2/1024x768q90/191/onz3.jpg (https://imageshack.com/i/5bonz3j)
http://imagizer.imageshack.us/v2/1024x768q90/839/nnu4.jpg (https://imageshack.com/i/nbnnu4j)
http://imagizer.imageshack.us/v2/1024x768q90/691/8j0b.jpg (https://imageshack.com/i/j78j0bj)
http://imagizer.imageshack.us/v2/1024x768q90/690/6kbf.jpg (https://imageshack.com/i/j66kbfj)

[Paul Huryk]

Nice!

If you need anything, give me a holler - I'm close to you...

[chrisfrom nj]

looks good man

[redsoxsstink]

got some new stuff
http://i147.photobucket.com/albums/r302/redsoxsstink/IMAG0133_zps31c67f26.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMAG0133_zps31c67f26.jpg.html)
http://i147.photobucket.com/albums/r302/redsoxsstink/IMAG0141_zpsfe75175d.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMAG0141_zpsfe75175d.jpg.html)
thing is massive...
http://i147.photobucket.com/albums/r302/redsoxsstink/IMAG0143_zpsfc69e0af.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMAG0143_zpsfc69e0af.jpg.html)
http://i147.photobucket.com/albums/r302/redsoxsstink/IMAG0146_zpsa6df9054.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMAG0146_zpsa6df9054.jpg.html)
http://i147.photobucket.com/albums/r302/redsoxsstink/IMAG0144_zps647fffda.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMAG0144_zps647fffda.jpg.html)

[greenformula92]

I hope that thing isn't in the basement lol. I would love to see the car once you got her all back together. Mine is pretty much ready except for a couple things like a tune and a new convertible top

[WildBillyT]

First,

Looks awesome!

Got a pic of the pistons or P/N for the short block?

[redsoxsstink]

First,

Looks awesome!

Got of the pistons or P/N for the short block?

The number that I can get from the bottom of the piston is 101v13 mahle. I know that's not the p/n but from what I can gather 4 reliefs 4-6cc volume.

And yes it's in the basement lol. We will be able to carry it up though. I hope to have it in the car by the end of the month.

[sweetbmxrider]

That is an easy 500lbs. Good luck :lol:

[redsoxsstink]

That is an easy 500lbs. Good luck :lol:

welllllll aware. me and my dad should be able to wrangle it up some stairs. carried the shortblock down by itself without a problem. the heads are only another 50lbs. the intake will be off while in transit

[zraffz]

welllllll aware. me and my dad should be able to wrangle it up some stairs. carried the shortblock down by itself without a problem. the heads are only another 50lbs. the intake will be off while in transit

Mad man lol. I hump motors around but wouldn't chance it going up a flight of stairs. I'd be assembling my motor in my kitchen before I did that lol.

[WildBillyT]

The number that I can get from the bottom of the piston is 101v13 mahle. I know that's not the p/n but from what I can gather 4 reliefs 4-6cc volume.

And yes it's in the basement lol. We will be able to carry it up though. I hope to have it in the car by the end of the month.

Gotcha. I was just checking b/c the old L98 short block from GM was a 9:1 engine with 64cc heads.

[redsoxsstink]

Gotcha. I was just checking b/c the old L98 short block from GM was a 9:1 engine with 64cc heads.

went with a smaller head gasket .015, piston is .026 in the hole. so i got the quench right at .041 and bumped compression. i think the stock head gasket is .038? im not sure. but according to my calculation compression should be right around 10.5:mrgreen:

[WildBillyT]

went with a smaller head gasket .015, piston is .026 in the hole. so i got the quench right at .041 and bumped compression. i think the stock head gasket is .038? im not sure. but according to my calculation compression should be right around 10.5:mrgreen:

Perfect, my 1094s work great :nick:

The old L98 pistons were 4 valve relief but also a -12cc dish. That was the killer.

[redsoxsstink]

Perfect, my 1094s work great :nick:

The old L98 pistons were 4 valve relief but also a -12cc dish. That was the killer.

Can't tell if troll or srs about the 1094s.

From my understanding it's a late l98. The number on the pistons cross reference to lt1s too so I assume it's the later style.

[WildBillyT]

Can't tell if troll or srs about the 1094s.

From my understanding it's a late l98. The number on the pistons cross reference to lt1s too so I assume it's the later style.

Serious, they seal great (knock on wood).

That's cool man. Wasn't trying to bust balls, just checking since it's still a bit early.

[redsoxsstink]

No worries. I heard good things about them too. Kinda amazing they work since there is literally nothing too them. Did you copper coat yours?

[WildBillyT]

No worries. I heard good things about them too. Kinda amazing they work since there is literally nothing too them. Did you copper coat yours?

No. I was very meticulous in cleaning the surfaces though.

[redsoxsstink]

First,

Looks awesome!

Got a pic of the pistons or P/N for the short block?

if you were curious 224-3497 is the p/n for the pistons. they were oem in LT1/LT4, L98 and many other engines, dish volume is 6.5-7cc 4 reliefs.

[zraffz]

The 1094's don't need copper coating. Technically they are shims not gaskets but being rubber coated they will seal up.
The non coated metal ones are the scary ones to seal lol. Spray the piss outta them with copper coat on one side, let it get tacky, hold it and spray the other side. I think the smallest shims I've ever used were .008" because I was trying to tighten up the quench on a n2o motor.

[redsoxsstink]

The 1094's don't need copper coating. Technically they are shims not gaskets but being rubber coated they will seal up.
The non coated metal ones are the scary ones to seal lol. Spray the piss outta them with copper coat on one side, let it get tacky, hold it and spray the other side. I think the smallest shims I've ever used were .008" because I was trying to tighten up the quench on a n2o motor.

i know they didnt need it since they are rubberized. ive heard people coat them and not coat them. i did it just to be safe i figured it couldnt hurt

[redsoxsstink]

some progress this past weekend
http://i147.photobucket.com/albums/r302/redsoxsstink/IMG_20140309_160409_zps81ea6498.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMG_20140309_160409_zps81ea6498.jpg.html)
http://i147.photobucket.com/albums/r302/redsoxsstink/IMG_20140311_110218_zpsea5d6a8a.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMG_20140311_110218_zpsea5d6a8a.jpg.html)

discovered the source of my old motors insatiable appetite for coolant.... a nice crack in the block :facepalm:

http://i147.photobucket.com/albums/r302/redsoxsstink/IMAG0171_zpseefc1b90.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMAG0171_zpseefc1b90.jpg.html)

[redsoxsstink]

did a few things today...
carried motor up from basement with my father
painted the headers
painted bell housing
painted trans
yanked rest of A/C out
installedmotor in the car


whats left...

install cooling sytem
plumb fuel lines
put trans back in


http://i147.photobucket.com/albums/r302/redsoxsstink/IMAG0206_zps882f570c.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMAG0206_zps882f570c.jpg.html)
http://i147.photobucket.com/albums/r302/redsoxsstink/IMG_20140316_153520_zps496271a4.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMG_20140316_153520_zps496271a4.jpg.html)
http://i147.photobucket.com/albums/r302/redsoxsstink/IMG_20140316_170658_zps572e8f5c.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMG_20140316_170658_zps572e8f5c.jpg.html)
http://i147.photobucket.com/albums/r302/redsoxsstink/IMG_20140316_173713_zps75a5e9db.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMG_20140316_173713_zps75a5e9db.jpg.html)
http://i147.photobucket.com/albums/r302/redsoxsstink/IMG_20140316_185816_zpsd3dc687f.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMG_20140316_185816_zpsd3dc687f.jpg.html)
http://i147.photobucket.com/albums/r302/redsoxsstink/IMG_20140316_203021_zps837eecd0.jpg (http://s147.photobucket.com/user/redsoxsstink/media/IMG_20140316_203021_zps837eecd0.jpg.html)

[WildBillyT]

Why no long tubes? Do they fit poorly on 3rd gens?

[redsoxsstink]

Why no long tubes? Do they fit poorly on 3rd gens?

they do make some that are very nice, but i play to really lower it in the future so i want to save some ground clearance. also my budget is very tight until OCMD i cant afford them even if i wanted right now.

if you can tell in the pic, you can see they are all banged up. they are the same headers the p/o i just painted them

[zraffz]

Why no long tubes? Do they fit poorly on 3rd gens?

I've never seen a set that fit nice on any lowered 3rd gen on 4th gen LT1. On my lowered LT1 the collectors are about 2.5" off the ground.

[deadtrend1]

I've never seen a set that fit nice on any lowered 3rd gen on 4th gen LT1. On my lowered LT1 the collectors are about 2.5" off the ground.

Stainless Works tuck up really well.

[redsoxsstink]

Stainless Works tuck up really well.

those are the best ive heard, but at 1200+ for them, ill stick with the shorties

[zraffz]

Stainless Works tuck up really well.

I wasn't aware.. I've ran pacesetters and I believe hedmann on a few cars and they both suck with ground clearance.

[89 Iroc-Z28]

nice man the motor looks good

[greenformula92]

I've always ran shorties. I know the longtubes will Def give you ground clearance issues if you plan to lower. I've had good luck with edelbrock and hooker headers. The hooker y pipe is much nicer out of the two though.

[redsoxsstink]

watch?v=opcdFemMVB4&list=UUPlIamAnuliIGb5ih8ejqQQ
took her first gasps of air this afternoon.:-P

[sweetbmxrider]

Nice man, sounds good. This moved along quickly!

[Blackbirdws6]

Sounds healthy. When does it hit the rollers?

[redsoxsstink]

Sounds healthy. When does it hit the rollers?

dyno probably this summer. EFX will be the place i hit up when i need.

i thought it moved too slowly, been a month since i pulled the old engine lol.

thanks for the complements!

[madness410]

sounds awesome

[greenformula92]

I'll be taking mine over to efx too when I can. YouTube isnt working for me right now. I'll have to check out the video later

[redsoxsstink]

just an update, over the past month been trying to have a friend tune the car and work some bugs out. started to smoke one weekend out of the blue, and overheat. pulled the intake blown intake gasket... great. determined that the heads we miss drilled so the gaskets wouldnt line up and the intake itself needed to be plained.

sent the intake out to get planed at Haledon Auto. got it back this weekend, after alot of oil changes to flush the coolant out of the engine and a semi-decent tune the car is running great and actually got to take it on a good 1hr break in.

[redsoxsstink]

l3Dfhx3FTYE fixed most the leaky exhaust for the most part

[sweetbmxrider]

When's dyno/track time? :)

[redsoxsstink]

When's dyno/track time? :)

still needs a better tune yet, that will be done after OCMD, unfortunately the car wont be there. but track time in the next month for sure

[WildBillyT]

Looking good man!

[greenformula92]

Lookin good. Sounds a lot like mine. Yours is prettier though

[redsoxsstink]

an update to this.... still no tune, still no track runs but this weekend myself and a friend of mine did new rotors, pads, calipers, brake master cyl, rear lower control arms, relo brackets, and AC delete panel. next weekend manual steering gear welding in the wide-band o2 and screwing with the exhaust, maybe it will leak less. then maybe get it tuned.... for right now the car is driveable but i dont want to race it until its correct
7802

7803

[BigAls87Z28]

Why the manual gear box? Are you planning to go full race mode?

[redsoxsstink]

Why the manual gear box? Are you planning to go full race mode?
clean up the engine bay, belts keep popping since p/s pump shaft is botched, drove manual steering cars and they arent that bad.

[redsoxsstink]

had a clunk and found this