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FJ1300 with a European Twist

Started by aviationfred, November 25, 2015, 09:14:27 PM

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aviationfred

The cylinder block and pistons arrived today.  :yahoo: They are absolutely beautiful.  :good2:


I'm not the fastest FJ rider, I am 'half-fast', the fastest slow guy....

Current
2008 VFR800 RC46 Vtec
1996 VFR750 RC36/2
1990 FJ1300 (1297cc) Casper
1990 VFR750 RC36/1 Minnie
1989 FJ1200 Lazarus, the Streetfighter Project
1985 VF500F RC31 Interceptor

Firehawk068

Very nice Fred!

Jealous of the upgrade.  :good:
Alan H.
Denver, CO
'90 FJ1200

Mark Olson

Mark O.
86 fj1200
sac ca.

                           " Get off your ass and Ride"

giantkiller

Hey Fred what's the cr on those pistons?
86 fj1350r
86 fj1380t turbo drag toy (soon)
87 fj1200 865 miles crashed for parts
89 fj1200 touring 2up
87 fzr1000 crashed
87 fzr750r Human Race teams world endurance champion
93 fzr600 Vance n hines ltd for sale
Custom chopper I built
Mini chopper I built for my daughter just like the big 1

aviationfred

I'm not the fastest FJ rider, I am 'half-fast', the fastest slow guy....

Current
2008 VFR800 RC46 Vtec
1996 VFR750 RC36/2
1990 FJ1300 (1297cc) Casper
1990 VFR750 RC36/1 Minnie
1989 FJ1200 Lazarus, the Streetfighter Project
1985 VF500F RC31 Interceptor

Pat Conlon

Fred, you better check that.... Are you planning headwork?

Randy had to shave the crown to get the Hank Scott 82mm pistons down to 10.5-1 (along with adding volume to the squish area)

Remember: bigger pistons = move volume into the same squish area = higher compression

Good eye Dan!
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

aviationfred

Quote from: Pat Conlon on December 09, 2015, 01:18:39 AM
Fred, you better check that.... Are you planning headwork?

Randy had to shave the crown to get the Hank Scott 82mm pistons down to 10.5-1 (along with adding volume to the squish area)

Remember: bigger pistons = move volume into the same squish area = higher compression

Good eye Dan!

At this time, I am not planning on doing any work to the head. It was rebuilt 2 1/2 years ago. I do plan to check clearances very well before the bike gets fired up.

I pulled this from the sale add for the kit. custom WISECO Pro Lite slipper skirt gas ported 1297cc (10.25-1 Compression) Piston Kit
I'm not the fastest FJ rider, I am 'half-fast', the fastest slow guy....

Current
2008 VFR800 RC46 Vtec
1996 VFR750 RC36/2
1990 FJ1300 (1297cc) Casper
1990 VFR750 RC36/1 Minnie
1989 FJ1200 Lazarus, the Streetfighter Project
1985 VF500F RC31 Interceptor

Pat Conlon

Fred, I also have the Wiseco Pro Lite pistons, curious, what is the measurement of the crown? (from deck to peak)

The valve pockets do look bigger on your pistons than on mine. Probably where the added volume is coming from.


Amazing that these 82mm Pro Lite pistons weigh the same as the 74mm stockers
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

giantkiller

Hey Fred talked to Andrew's today. Trying to find Turbo pistons for the 1380 block I bought. He said busa pistons are usable.. Otherwise I would have to go through Ross to get custom made dished Turbo pistons.(he said he had to order 30 sets to get those custom made by wisco ) I found busa 83mm Turbo pistons for $429 pins clips and rings included. Have to, some how make sure they will work. But that's probably the way I'll have to go. He said he could machine the pistons down for the 1450 block. So I can get the compression down to pump gas levels.
Hopefully I can get it done by June. Depending on finances.
86 fj1350r
86 fj1380t turbo drag toy (soon)
87 fj1200 865 miles crashed for parts
89 fj1200 touring 2up
87 fzr1000 crashed
87 fzr750r Human Race teams world endurance champion
93 fzr600 Vance n hines ltd for sale
Custom chopper I built
Mini chopper I built for my daughter just like the big 1

FJscott

Dan,
Funny you mentioned running Busa Pistons in an FJ.I was just reading an article in the November Cycle World.
There is an article in the service Q&A section where a guy asked if he could use a modern lighter piston from a newer water cooled bike in an older air cooled motor. The experts reply was that it is done frequently with poor results. The Pistons in an aircooled motor have thicker domes and longer skirts to achieve more surface area contact for heat transfer. They will run like a raped ape for a while but prematurely succumb to failure.
I don't know this to be fact, just something to think about.

Scott

giantkiller

Thanks for the heads up Scott. I'll have to check on that. Fred's and Pat's Pro lites. Look like they have almost no skirt.
86 fj1350r
86 fj1380t turbo drag toy (soon)
87 fj1200 865 miles crashed for parts
89 fj1200 touring 2up
87 fzr1000 crashed
87 fzr750r Human Race teams world endurance champion
93 fzr600 Vance n hines ltd for sale
Custom chopper I built
Mini chopper I built for my daughter just like the big 1

FJscott

Dan,
Not everything in print is correct, Andrews has built a lot of engines and So I would defer to his recommendation.just felt compelled to pass it on as I just read that article yesterday.

Scott

aviationfred

I started to tear the bike down for the engine removal.

I'm not the fastest FJ rider, I am 'half-fast', the fastest slow guy....

Current
2008 VFR800 RC46 Vtec
1996 VFR750 RC36/2
1990 FJ1300 (1297cc) Casper
1990 VFR750 RC36/1 Minnie
1989 FJ1200 Lazarus, the Streetfighter Project
1985 VF500F RC31 Interceptor

X-Ray

'94 FJ1200 Wet Pale Brown
'93 FJ1200 Dark Violet/Silver
'84 FJ1100 Red/White

'91 FJ1200 Dark Violet/Silver ( Now Sold)
'92 FJ1200 Project/Resto Dark Violet/Silver (Now Sold)






For photos of my rear wheel swap, heres the link  https://www.flickr.com/gp/150032671@N02/62k3KZ

aviationfred

Working on getting decals made.....


I'm not the fastest FJ rider, I am 'half-fast', the fastest slow guy....

Current
2008 VFR800 RC46 Vtec
1996 VFR750 RC36/2
1990 FJ1300 (1297cc) Casper
1990 VFR750 RC36/1 Minnie
1989 FJ1200 Lazarus, the Streetfighter Project
1985 VF500F RC31 Interceptor